Diver

You are a non-rate who wants to dive. The Coast Guard has no DV A-school for new accessions — diving is a secondary designation earned on top of a primary rating, and right now your job is to earn the rating that will qualify you to compete for the pipeline.

You reported from TRACEN Cape May as a non-rated Coastie assigned to a cutter, a small boat station, or an Aids to Navigation Team — most likely striking for BM or MK, since deck and engineering billets feed the overwhelming majority of CG diver slots. Your daily work is the same as every other non-rate: line-handling, deck preservation, engineroom watch under supervision, mess duty, paint and chip duty, and the working parties that keep the station running. The difference is what you are doing with your off-hours: PT standards for a competitive dive candidate are well above the PFT floor, and the BM or MK chief watching your PQS progress is the same chief who will write the endorsement letter for your dive candidate screening. You are not diving yet. You are building the primary rating and the physical platform the dive designation requires.

• 01Pass the Coast Guard PFT at a competitive level well above the minimum — dive candidate physical screening historically tests swim performance, water confidence, and load-bearing cardio well beyond the standard COMDTINST M1020.8 requirement.
• 02Advance your primary rating PQS — Boat Crew Member, Engineering Watchstander, or your rating-specific qual book — because the dive designation runs on top of a rated Coastie, not instead of one.
• 03Build basic water confidence and swim proficiency in every available hour — open-water swimming, timed swims, breath-holding — because dive candidate selection screens for the swimmer the course can build on, not the one it has to rescue.
• 04Know the BOAT Manual cold for your unit's platform, and stand every available underway as a trainee. Dive billets are mostly at Marine Safety detachments, sectors, and aids-to-navigation teams — the ops picture matters.
• 05Stay out of trouble ashore. The dive community is small and the DV program officer and the screening board read the full record — one NJP equivalent or a DUI and the packet is dead before it goes forward.
• 06Learn basic underwater safety awareness from the Coast Guard Boating Safety and the NAVRULES material that covers dive flag protocol (Alpha flag underway; red-and-white diver-down flag for state-law-jurisdicted waters) — you will be the deck topsides hand on dive operations long before you enter the water professionally.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. The doctrinal source for all CG dive operations, qualification standards, and medical requirements. Pull the current version from the CG Directives System before citing by chapter.
• —COMDTINST M1000-series — Coast Guard Personnel Manual. The umbrella for advancement, leave, liberty, and the application process for secondary designations.
• —COMDTINST M1020.8 (current revision) — Coast Guard Weight and Body Fat Standards. Know the floor, then exceed it significantly — the dive screening standard is not the same number.
• —The Coast Guard BOAT Manual — for your primary rating's deck operations context. Dive flag protocol, dive-support boat operations, and the topsides safety role you will fill before you enter the water.
• —Navigation Rules and Regulations Handbook (NAVRULES) — dive-flag obligations under both COLREGS (Rule 27) and Inland Rules. Know what the Alpha flag means and when it is required.
• —Your primary rating's Performance Qualification Standard (PQS) — the qual book that takes you from non-rate to BM3 or MK3. Complete it faster than the timeline the chief sets, not on it.

• —Primary rating A-school class date earned — the dive designation is impossible without a rating badge, and the endorsement letter for dive candidate screening requires an OIC / XO with a reason to write it.
• —PFT score well above the minimum every cycle. The dive candidate screening packet includes physical fitness documentation; a marginal PFT score tells the screening board you are not doing the work.
• —Boat Crew Member qualification signed, or Engineering Watchstander signed if your primary rating is MK or ME — the qual that shows you belong on the water before they put you under it.
• —A clean record: no NJP equivalents, no civil convictions, no documented financial misconduct. The dive community runs background in its screening and the program is too small to carry risk.
• —Open communication with your chain about the DV track — the OIC or XPO who does not know you are working toward the designation cannot write the endorsement or arrange the right assignment.

• —Treating the dive designation as a way to skip the primary rating grind. Every DV in the Coast Guard holds a working rating; you will be expected to pull your weight as a BM3 or MK3 or ME3 in addition to diving — the Chief Petty Officer who catches you coasting on the "I'm a diver" identity will make your life instructional.
• —Skipping PFT prep because "I'm a strong swimmer." The dive screening is physically broad — cardiovascular endurance, upper body work, water confidence under stress — and the candidate who peaks only in the pool washes out on the land portion.
• —Letting the primary rating PQS slip while chasing dive candidate prep. If the BM1 or MK2 has to chase you to finish a qual signature, the endorsement letter for dive candidate screening is not happening.
• —Talking about the dive program more than working toward it. At a small boat station or a sector with a dive team, the senior DVs can hear from the BM chief which junior members are performers versus which ones are networking their way toward a cool designator.
• —Ignoring the dive flag rules and the topsides safety role. Before you ever put on a wetsuit you will be the deck safety tender on somebody else's dive. Showing up without knowing the Alpha flag protocol or how to throw a heaving line to a diver in distress is how you get removed from that billet.

The good DV-track non-rate is the seaman the BM1 or MK chief cannot find a reason to hold back — PQS signed ahead of schedule, PFT in the top third of the duty section, Boat Crew Member qualification completed, record clean, and a conversation already had with the OIC about a follow-on assignment to a unit with a dive team. By the time the A-school designation comes through for the primary rating, the dive candidate screening packet is being assembled, not being started.

You are a newly rated petty officer with a dive designation in your sights. The Second Class Diver certification is the floor for active Coast Guard diving operations, and getting there from here requires your primary rating, your dive training pipeline, and two skill sets operating at the same time.

You came back from TRACEN Yorktown as a BM3, MK3, ME3, or another rated petty officer and you are working through the competitive process to attend the Second Class Diver course — the minimum qualification level to conduct Coast Guard operational diving. CG diver training runs through the Navy Experimental Diving Unit (NEDU) and affiliated Navy Dive School pipelines at the Naval Diving and Salvage Training Center (NDSTC) in Panama City, FL, under agreements that give CG members access to Navy diving training. Before you can compete for a class seat, you will complete a dive candidate medical examination, pass a rigorous in-water screening, hold a current diving physical clearance, and have the chain of command endorsement that says you are a rated petty officer the unit can spare for a multi-week pipeline. In garrison you are performing the full workload of your primary rating — boat crew on the RB-S or RB-M, engineering maintenance on the small boat or cutter plant, Aids to Navigation work on the buoy deck — and fitting dive candidate prep around it.

• 01Meet and maintain the physical screening standard for dive candidate medical examination under the current COMDTINST M3150.1 — the diving physical is more stringent than the standard PFT and requires a diving-qualified medical officer sign-off.
• 02Complete in-water pre-screening requirements to the standard the DV program officer publishes — timed swims, underwater breath-hold tasks, and water-confidence assessments that weed out candidates before the formal school pipeline.
• 03Perform your primary-rating duties to standard: Coxswain qualification or Engineering Watchstander qualification progressing on the BM3 or MK3 timetable — the unit does not excuse dive candidates from the rating.
• 04Maintain physical fitness above the dive candidate screening floor — year-round, not just before the screening date. The NDSTC pipeline has physical evolutions that come early and washout rates are meaningful.
• 05Know the basic framework of COMDTINST M3150.1 before you get to Panama City — dive tables, pressure physics (Boyle's, Henry's, Dalton's laws as they apply to diving medicine), decompression sickness recognition, and the dive supervisor chain of command in a CG dive operation.
• 06Understand the topsides safety role cold: dive safety observer, dive supervisor assistant, surface supplied air tender — you will work these roles on operational dives at your unit before you are a certified diver.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. Read Part I (administration, qualification standards, medical requirements) and Part II (physics, physiology, decompression) before you screen. The NDSTC pipeline will not wait for you to catch up.
• —Navy Diving Manual, NAVSEA SS521-AG-PRO-010 (current revision) — the Navy doctrinal source that CG dive training draws from. Verify the current revision through the NAVSEA publications system.
• —COMDTINST M1000-series — Personnel Manual sections on secondary designations, the application and screening process, and how a DV designation is recorded in your service record.
• —COMDTINST M1020.8 (current revision) — Weight and Body Fat Standards. The floor you already exceed if you are a competitive dive candidate.
• —The Coast Guard BOAT Manual — dive-support platform operations for the boats your unit runs, including approach-and-recovery procedures for divers in the water.
• —Your primary rating's Rating Performance Qualification Standard (PQS) — the BM or MK qual book you are running in parallel with the dive candidate process.

• —Dive candidate medical examination cleared by a diving-qualified medical officer per COMDTINST M3150.1 — the diving physical is the gate before anything else.
• —In-water pre-screening completed to the DV program officer's published standard; unit chain of command endorsement letter signed and submitted with the screening packet.
• —Primary rating PQS on schedule — the unit will not hold a billet for a PO3 who has not made progress on Coxswain qualification or Engineering Watchstander during a multi-week dive school pipeline.
• —Physical fitness assessed above minimum every cycle; no weight or body composition finding on the record within the past year.
• —NDSTC class seat confirmed and travel orders cut — the class date is the milestone; the preparation is the variable.

• —Showing up to the NDSTC Second Class Diver pipeline undertrained. The course has real washout pressure; candidates who arrive having only met the screening minimum — rather than exceeding it — are the ones who fail the first week's physical evolutions.
• —Letting your primary rating PQS slip while focusing on dive candidate prep. The BM1 or MK chief back at the unit cannot hold the billet open for a PO3 who left for Panama City and came back behind on Coxswain qualification.
• —Treating the dive medical as a one-time checkbox. Dive physical clearances have currency requirements under COMDTINST M3150.1 — the candidate who lets the medical lapse between screening and school is off the slate.
• —Not reading COMDTINST M3150.1 before arrival at NDSTC. The physics and physiology of diving are tested in classroom sessions at the school and candidates who have never cracked the manual put themselves behind from day one.
• —Posting OPSEC-relevant content about dive unit assignments, training locations, or dive team schedules on social media. The DV community is a small intelligence footprint and the Sector security officer reads the same feeds.

The good PO3 dive candidate is the petty officer who gets to Panama City with the primary rating PQS running ahead of schedule, a dive physical clearance that is months fresh, and a command endorsement letter signed without hesitation. He arrives physically prepared enough that the first week's evolutions are hard but survivable, he has read enough of COMDTINST M3150.1 to not be surprised by the classroom, and when he comes back to the unit with Second Class Diver on the record, the BM chief or the MKC is already talking about which operational billet will put the designation to use.

You are a qualified diver. The Second Class Diver certification is on the record, possibly the First Class qualification in progress, and you are the most common operational-dive-billet rank in the Coast Guard's small diving community.

You hold a Second Class Diver designation — possibly First Class Diver, depending on your pipeline — and you are assigned to a unit with an authorized dive billet: a Marine Safety Office or Marine Safety Detachment, a Sector with a dive team, an Aids to Navigation Team that uses divers for buoy and fixed-aid underwater inspection, or one of the few specialized billets at district or area level. The operational work is real: underwater hull inspections on Coast Guard and other government vessels, search and recovery operations on CG case or law enforcement support, aids-to-navigation work (cleaning fouled chains, inspecting buoy hulls, clearing debris from fixed-aid structures), and law enforcement diving support to sector MLE operations. You are also still fully employed in your primary rating — BM2, MK2, ME2 — standing boat crew watches, engineering watches, or Aids-to-Nav work depending on your rating. The dive work happens when the case or the mission requires it; the primary rating work happens every day.

• 01Conduct an underwater hull inspection to the COMDTINST M3150.1 standard — systematic coverage of the hull, running gear, sea chests, and underwater appendages; deficiency notation on the dive slate; clean verbal debrief to the officer in charge within one hour of surfacing.
• 02Run a search dive for a lost person or evidence recovery — grid search pattern, bottom conditions reporting, evidence handling in the water, surface communication via line pulls and the dive signal code, and the handoff to law enforcement when the dive recovers something with an evidence chain.
• 03Operate surface-supplied air diving equipment (the hard-hat or band-mask rig) as well as open-circuit SCUBA in the configurations the unit authorizes, to the COMDTINST M3150.1 platform standards for each rig type.
• 04Maintain dive equipment to the manufacturer's and the Diving Manual's standards — regulator function checks, cylinder hydrostatic test and visual inspection currency, buoyancy compensator bladder check, wetsuit and drysuit maintenance, and the dive log entries the DV supervisor uses to track equipment serviceability.
• 05Perform as a dive buddy and safety diver: maintain the bottom-time log, communicate via slate during the dive, and execute the emergency ascent or assist-to-surface procedure for a diver in distress to the COMDTINST M3150.1 emergency protocol.
• 06Stand the topsides safety observer / dive tender role when not in the water — the DV supervisor's right hand on the surface, running the dive log, managing umbilical or the shot-line, and making the call to surface the diver if the bottom conditions or the diver's signals indicate distress.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. At this rank you read it to chapter and section, not just to concept. The decompression tables, the surface-supplied air equipment checklist, the emergency procedures, and the dive supervisor qualification requirements are your professional working knowledge.
• —Navy Diving Manual, NAVSEA SS521-AG-PRO-010 (current revision) — the companion doctrinal source; CG operational diving draws from both. Verify the current revision through NAVSEA publications.
• —COMDTINST M1000-series — Personnel Manual sections on the DV secondary designation, the application process for First Class Diver qualification, and the EER impact of a secondary designation on the SWE final multiple.
• —CIM 1610-series — Enlisted Employee Review (EER). You write inputs on PO3s and seamen in your primary rating; understand how the EER mark and the chief's narrative drive the SWE multiple.
• —Coast Guard BOAT Manual — platform-specific procedures for dive-support boat operations (approach and recovery, anchoring for a dive site, drift dive setup, and small boat crew coordination with the dive team).
• —Your primary rating's advancement bibliography (Rating Knowledge for BM / MK / ME / etc.) — the SWE for PO1 runs on the primary rating bibliography, not on diving doctrine. The dive designation is a secondary; the primary rating is what the exam tests.

• —Second Class Diver qualification current per COMDTINST M3150.1 — including annual dive physical clearance, minimum number of qualification dives per year, and equipment currency. A lapsed qualification makes you unavailable for operational diving; the DV supervisor tracks this on the unit dive log.
• —First Class Diver pipeline packet under construction if the billet and the unit support it — the First Class designation expands the operations you can lead and is the baseline for the dive supervisor qualification.
• —Primary rating PQS milestones on track — Coxswain qualification, Engineering Petty Officer of the Watch, or the equivalent for your rating. The dive designation does not substitute for advancement in the primary rating.
• —SWE preparation on the LCPO's timeline for PO1; pull the current ALCGENL / CGPSC promotion message for the SWE cutoff and ride the most recent multiple as the study target.
• —EER marks at or near the unit average for your primary rating cohort — your DV designation is a differentiator in the promotion file, but the primary rating EER blocks are what the advancement board reads.

• —Entering the water on a dive that exceeds your signed qualification level. A Second Class Diver conducting an operation that requires First Class or Dive Supervisor authority — even with verbal permission from the unit OIC — is the incident the Coast Guard Safety Report and COMDTINST M3150.1 violation both name you in.
• —Letting dive equipment currency lapse. A cylinder past its hydrostatic test date, a regulator without a recent function check, a buoyancy compensator with an uninspected bladder — the equipment failure during a dive is on the last person who signed the maintenance log, and that is you.
• —Surfacing a search dive without completing the evidence-handling protocol because "we didn't find anything." The next dive will be an investigation dive after the case goes to court and the defense attorney asks which diver confirmed the bottom was empty on the first pass.
• —Skipping the primary rating SWE study cycle because the dive qualification feels like enough differentiator. The DV designation adds points to your final multiple but it does not replace SWE performance; the CG rating SWE is what picks the advancement slate, not secondary designations alone.
• —Discussing operational dive task specifics — hull inspection findings on CG or other government vessels, search dive recovery details, MLE support dive locations — outside the appropriate chain. The OPSEC posture on dive operations is tighter than most ratings, and the Sector intelligence officer reads what gets posted.

The good PO2 diver is the petty officer the dive supervisor puts on the hull inspection when the unit CO needs a clean, defensible report — because the debrief comes back systematic, the deficiency notation is on the slate before the diver is back aboard, and the primary-rating chief does not have to chase the EER input or the SWE study log. His equipment log is current, his dive physical is fresh, and the First Class Diver packet is in motion because the dive supervisor already told him what the next billet requires.

You are the senior operational diver at most Coast Guard units. First Class qualification or the Dive Supervisor designation is on your record or in your pipeline, and the junior DVs on the team are running their dive operations under your eye.

You are a qualified First Class Diver or well along in that pipeline, and you are the primary operational diver the unit fields on the hard cases — the complex hull inspection on a cutter with ice damage, the recovery dive in current, the aids-to-navigation task on a fixed aid that no surface team can safely access, the MLE support dive for a law enforcement case that needs a clean evidence chain. At units with a dive team, you are effectively the dive supervisor in training or the acting dive supervisor for day-to-day operations under the senior DV officer or the senior CWO. You run the pre-dive brief, the post-dive debrief, the equipment serviceability check, and the dive log that lives under COMDTINST M3150.1 for the unit's annual inspection. You write EER inputs on the PO2s and PO3s in your primary rating, you mentor the one or two junior DVs at the unit through the qualification progression, and you run the chief board prep in parallel — EER profile, awards stack, leadership C-school, and the chiefs' mess sponsorship conversation.

• 01Plan and brief a dive operation to the COMDTINST M3150.1 Dive Supervisor standard — site survey, hazard assessment, bottom conditions, air consumption planning, emergency procedures, surface communication plan, and the abort criteria the team agrees to before anyone goes in the water.
• 02Operate and supervise surface-supplied air diving and SCUBA in all conditions the unit's missions require — hull inspection in port and in current, search and recovery in turbid water, aids-to-navigation work around fixed structures and mooring chains.
• 03Maintain the unit's dive equipment program — cylinder hydrostatic test and visual inspection tracking, regulator annual service scheduling, buoyancy compensator and suit maintenance, dive log currency, and the equipment-serviceability report the unit CO reads before authorizing any dive.
• 04Write the post-dive report for an operational dive — findings, bottom conditions, equipment performance, any anomalies or safety observations — clean enough that the Sector marine safety chief can attach it to the vessel inspection or the case file without revision.
• 05Mentor junior DVs through the Second Class and First Class qualification progression — dive log requirements, medical clearance currency, the equipment checks they have to do cold, and the operational experience needed before a First Class candidacy packet is competitive.
• 06Run the primary-rating department work in parallel: BM1 or MK1 duties — EER inputs, watchbill management, qual program — at full weight, because the unit OIC views a DV-designated PO1 as a full-rate senior petty officer who also dives, not a dive specialist who incidentally holds a rate.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. At PO1 you own Part III (operations) and Part IV (equipment) and you can cite the relevant sections in a pre-dive brief without looking them up.
• —Navy Diving Manual, NAVSEA SS521-AG-PRO-010 (current revision) — you cross-reference this with COMDTINST M3150.1 when a scenario is not explicitly covered in the CG manual.
• —CIM 1610-series — Enlisted Employee Review (EER). You write the bulk of the inputs for the primary rating PO2s and PO3s below you and you read the DVC / senior DV officer's draft of your own.
• —COMDTINST M1000-series — Personnel Manual sections on advancement, the Service-Wide Personnel Board process for E-7 selection, and the secondary designation records for DVs.
• —Your primary rating's advancement bibliography for the BMC / MKC board process — the chief board reads the primary rating EER profile and the awards stack, with the DV designation as a visible secondary differentiator.
• —33 CFR Part 147 — Outer Continental Shelf activities and the federal framework governing dive operations in US coastal waters, relevant when the unit supports civilian vessel inspections or OCS-adjacent law enforcement.

• —First Class Diver qualification on the record or in the formal pipeline per COMDTINST M3150.1 — the First Class certification is the prerequisite for Dive Supervisor qualification, and the Dive Supervisor is the operational leadership role the rating builds toward.
• —Dive Supervisor candidacy or designation for units that support that billet — the pre-dive brief, the dive log, and the post-dive debrief are yours to run, and the Sector marine safety chief is reading the product.
• —Primary rating PO1 EER profile at the top of the unit's cohort. The chief board reads the EER trend across multiple commands, not just the dive designation in the secondary block.
• —Service-Wide Personnel Board / Chief selection competitive — pull the current CGPSC ALCGENL for the chief slate cycle and ride the most recent slate composition for the study and awards plan.
• —Unit dive log compliant with COMDTINST M3150.1 requirements for the number and type of operational dives, equipment inspection currency, and diver physical clearance tracking — the District or Area dive program coordinator will ask for it on a review cycle.

• —Signing off a dive brief without completing the site survey or the abort-criteria conversation. Every dive the unit conducts under your Dive Supervisor authority is governed by the plan you briefed; the incident that results from a condition you did not address is yours.
• —Allowing a junior DV to exceed the authorization level of their qualification on an operational dive because the task seems routine. COMDTINST M3150.1 defines what each qualification level can do; the Sector safety officer reads the dive log against those limits after an incident.
• —Coasting on the DV designation in the chief board packet at the expense of the primary rating EER story. The chief board sees the DV secondary designation as a differentiator; they see the EER blocks as the data. One line in the secondary-designations block does not carry three marginal EER periods.
• —Letting the unit dive log go stale between operations. Dive log currency is a compliance requirement under COMDTINST M3150.1; the log that is six months behind when the District dive program coordinator shows up is a finding that lands on the unit CO and the DV supervisor by name.
• —Treating the dive brief as a formality when the job looks routine. Hull inspections in port go wrong. Search dives in turbid water go wrong. The diver who enters the water on a job that "we've done a hundred times" without a brief is the diver who becomes the case study in the next COMDTINST M3150.1 revision.

The good PO1 diver is the senior petty officer the DV officer puts on the case that has to be done right — the hull inspection that has to withstand a marine survey, the recovery dive with a law enforcement evidence chain, the aids-to-navigation task under the bridge at current change. His dive log is current, his junior DVs are advancing through the qualification progression on his schedule, his primary rating EER blocks read action-result-impact, and the chiefs in the mess are sponsoring the chief board packet. The unit CO signs the DV operation authority without having to ask twice because the brief, the plan, and the debrief are always there.

You are an anchor and the senior diving authority at your command. The Chiefs Mess is yours; the dive program runs on the standard you set; and every operational dive that goes out under your unit's authority is a dive you briefed, authorized, or trained the team to execute.

As a Chief with the DV designation you are typically the unit Dive Supervisor, the senior enlisted diver at a Sector or Marine Safety field unit, or the senior DV petty officer at a specialized CG diving command. The job changed more between PO1 and CPO than at any other promotion — you are now responsible for the unit's dive program in its entirety: training plan, equipment program, annual inspection readiness, diver qualification tracking, and the advice you give the unit CO on every dive authority decision. You went to the Chief Petty Officer Academy (CPOA) at TRACEN Petaluma, CA and the title above "diver" is now "chief" in everything that matters at the deckplate. You write EERs on the PO1s and PO2s in your primary rating, you advise the OIC on dive and primary-rating readiness, you sit in the Sector chiefs' calls, and you start the Senior Chief preparation in earnest — Senior Enlisted Leadership Course (SELC), the senior-chief conversation with the command master chief, and the post-Coast Guard picture 36-48 months out.

• 01Run the unit dive program as the Dive Supervisor — training plan, equipment serviceability, dive log compliance, diver physical clearance currency, annual operational review, and the interface with the District or Area dive program coordinator.
• 02Authorize and supervise operational dives to the COMDTINST M3150.1 Dive Supervisor standard — pre-dive brief, on-scene safety, abort-criteria enforcement, post-dive debrief, and the report that goes to the Sector marine safety chief and the unit CO.
• 03Mentor the one or two junior DVs on the team through the Second Class and First Class Diver progression — dive log accumulation, medical currency, equipment qualification, and the operational experience that makes a First Class Diver candidacy packet competitive.
• 04Brief the unit CO, the Sector marine safety chief, and the District dive program coordinator on dive program readiness honestly — diver qualification currency, equipment serviceability, mission capability, and the things you need to do the next job safely.
• 05Run the primary-rating senior-petty-officer and chief duties in parallel — EER inputs for the PO1s and PO2s in your rating, qual program administration, watchbill, and the daily enforcement of the standard the Chiefs Mess requires.
• 06Sit in the Chiefs Mess on the unit's discipline cases, climate sensing reports, and EO / harassment-prevention picture and translate those into actions the OIC will fund and the unit will execute.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. You are the unit's senior authority on what it says, and you are the one who calls the Sector when a task is outside what the manual authorizes.
• —Navy Diving Manual, NAVSEA SS521-AG-PRO-010 (current revision) — the companion doctrine you draw from when the CG manual is silent.
• —COMDTINST M1000-series — Personnel Manual (you and the OIC own this together for the unit on every personnel matter).
• —CIM 1610-series — Enlisted Employee Review (EER). Your bullets pick the next advancement slate.
• —COMDTINST M5350-series and the equivalent CG civil rights and harassment-prevention publications — you sit in the unit's climate posture as a senior enlisted member.
• —The Chief Petty Officer Academy and Senior Enlisted Leadership Course reading lists from TRACEN Petaluma, CA — your continuing professional development above the anchor.

• —Chief Petty Officer Academy (CPOA) at TRACEN Petaluma, CA completed; Senior Enlisted Leadership Course (SELC) on the calendar if competitive for senior chief.
• —Dive Supervisor qualification current per COMDTINST M3150.1 — annual dive physical clearance, qualification dive currency, and program-management training as the Dive Supervisor designation requires.
• —Unit dive log and equipment-compliance program survives a District or Area dive program review without a major finding. Zero preventable dive-related Class A mishaps during your tenure; documented corrective action on any Class B or C event.
• —Unit EER profile clean — the DVs and primary-rating PO1s under you are advancing on schedule and your bullets read consistent with what the Sector and District know about the unit.
• —Zero senior-enlisted integrity incidents — financial, fraternization, OPSEC, dive-operation records discipline. The CG diving community is small enough that one incident travels to every unit with a DV billet.

• —Authorizing a dive that is outside the unit's certification level or the individual diver's qualification because the CO wants it done and there is no one else. The COMDTINST M3150.1 authorization chain exists for the Coastie in the water, not for the operational tempo on the board. The chief who signs off outside the authorization is the chief the Safety Report names.
• —Going public with disagreement with the OIC or the Sector marine safety chief. You take it to the office; you walk out aligned, and the unit reads alignment from the anchor.
• —Stopping your personal PT and dive currency because "I'm a chief now." Dive currency is a qualification requirement, not an informal nicety, and the Dive Supervisor who lets his own annual dives lapse is technically unauthorized to supervise the people he is briefing.
• —Inflating EER blocks on a favored PO1. The senior chiefs in the Mess and the Sector DV chief network see the inflation across multiple cycles, and the slate discounts your bullets.
• —Skipping the Chiefs Mess work — climate sensing, discipline review, new-arrival sponsorship — because the dive program and the primary rating are both demanding. The Mess is the job at this paygrade; treating it as overhead is how a CPO becomes a non-selectee for SCPO.

The good DV Chief is the one the Sector commander calls when a dive program at a subordinate unit is broken — because the answer is usually a senior diver with an anchor on the collar. His PO1 DVs are in the First Class pipeline and his PO2 DVs are logging qualification dives. The unit dive program survives a District review cold. His primary-rating PO1s are advancing on schedule. When the District coordinator shows up to audit the log, the chief hands it over without flinching — and the Sector marine safety chief already knows his name from every post-dive debrief report that landed without a rewrite.

You are the senior enlisted voice for CG diving in your district, area, or command. Every DV chief in your organization knows your name; every junior diver is reading your career to understand what the DV designation means at the top of the enlisted ladder.

As a Senior Chief or Master Chief with the DV designation you are one of a very small number of senior enlisted divers in the Coast Guard. The community is small enough that at SCPO and MCPO you may be the District or Area dive program coordinator, the senior enlisted advisor at a major CG diving command, the CMC or OIC of a command whose mission includes diving operations, or a senior staff billet at Headquarters advising on dive policy, COMDTINST M3150.1 revisions, and dive program resourcing. You have moved well beyond the operational dive execution seat and into the policy, standards, and community health role. You advise the District commander, Area commander, or Headquarters flag on every enlisted diving decision — qualification standards, billet sufficiency, equipment procurement, training pipeline throughput — and you set the standard for the community by what you tolerate at the dive site and what you do not. You are actively planning the post-Coast Guard transition 24-36 months out — the CG DV credential translates to commercial saturation diving (if the pathway was taken), USCG civilian Marine Safety Inspector roles under 46 CFR Part 4, government diving supervisor positions with USACE, NOAA, or Navy programs, and federal law-enforcement diving positions — and the senior chief who plans it carefully lands well.

• 01Run a District or Area dive program — qualification standards compliance across all assigned units, annual dive log review, equipment inspection cycle, diver medical currency tracking, operational dive authorization review, and the interface with Headquarters dive program staff.
• 02Brief the District commander, Area commander, or Headquarters flag on dive program readiness and risk in language that supports a real resourcing or policy decision — including the bad news about billet gaps, aging equipment, or qualification shortfalls before an incident makes it a finding.
• 03Sit on COMDTINST M3150.1 review working groups and translate operational experience from the deckplate into defensible policy language that protects the divers in the water without making the mission impossible to execute.
• 04Mentor four to six DV chiefs into SCPO-board-competitive and community-leader candidates — EER trajectory, awards profile, broadening assignments (Headquarters staff, NDSTC instructor billet, District program coordinator), and the post-CG credential plan.
• 05Walk the site of a dive mishap or a near-miss event and identify the broken system before the Administrative Investigations Manual process does — the authorization drift, the equipment lapse, the qualification shortcut the dive supervisor tolerated.
• 06Run a senior-enlisted community manager conversation with junior chiefs honestly about the DV community's size constraints — billet scarcity, post-CG credential translation, and the realistic senior-enlisted career arc for a diver in a small rating community.

• —COMDTINST M3150.1 (current series) — Coast Guard Diving Manual. At SCPO / MCPO you help write the next revision and you defend the current one to the Headquarters flag.
• —Navy Diving Manual, NAVSEA SS521-AG-PRO-010 (current revision) — joint doctrine and the interoperability standard when CG divers work alongside Navy or USACE dive teams.
• —COMDTINST M1000-series — Personnel Manual (you sign as the senior enlisted on personnel compliance at your command).
• —CIM 1610-series — Enlisted Employee Review (EER). Your bullets pick the next DV chief and SCPO slate across the community.
• —CGPSC ALCGENL and ALSPO messages — pull the current slate composition and community-manager guidance. The DV community is small enough that every SCPO candidate is visible by name.
• —The Senior Enlisted Leadership Course (SELC) reading list and the master chief / command master chief community professional development curriculum from TRACEN Petaluma, CA.

• —Senior Enlisted Leadership Course (SELC) graduate; command master chief or senior area dive program coordinator — the visible track for the rating community's most senior enlisted dive-designated seats.
• —Dive qualification currency maintained as long as billet and physical clearance support it — the MCPO who loses dive currency because the billet does not require it is the MCPO who has moved from dive community leader to dive community advisor. Both are legitimate; be honest about which you are.
• —District or Area dive program compliant with COMDTINST M3150.1 across all assigned units during your tenure — no preventable Class A dive mishaps; documented corrective action on every Class B or C event; annual dive log reviews showing program health.
• —DV chief and SCPO advancement pipeline producing selectees on schedule — the community is too small to lose a generation of senior DVs to a bad mentoring cycle.
• —Zero senior-enlisted integrity incidents — financial, fraternization, OPSEC, dive-authorization records. The diving community is small and the incident record travels instantly.

• —Going public with disagreement with the District or Area commander, or with Headquarters dive policy. You take it through the proper chain; you walk out aligned; the community reads alignment from a MCPO the way it reads the tide — the formation adjusts.
• —Confusing seniority with leverage. The Service keeps senior enlisted who serve the formation and the community's long-term health, not the ones who run a personal program that circumvents the chain or the qualification standards.
• —Stopping personal PT and dive currency because "I am at District." The Dive Supervisor who cannot pass a dive physical at inspection has lost the technical authority that makes the policy advice credible — know where you stand and be honest about it.
• —Letting a DV chief run a sloppy authorization record or a lapsed equipment program at a subordinate unit because "he has a clean operational record." The Administrative Investigations Manual investigation after the incident reads the authorization log, not the operational accomplishments.
• —Treating the warm-up to retirement as if the job is over. Until you walk out of formation for the last time, the dive community is your program — and the DV chiefs who come up after you will run the standard you set in your last two years more than the one you set in your first twenty.

The good DV Senior or Master Chief is the senior enlisted every CG diver knows by face and reputation — the one the District commander calls at 0200 when a dive mishap is in progress and the one the Headquarters flag calls when the next COMDTINST M3150.1 revision goes to coordination. His DV chiefs are advancing, his program survives annual reviews, and the dive authorization logs under his oversight are the ones that hold up in an Administrative Investigation. When he leaves the formation for the last time, the community runs the standard he set — and the post-CG market in government diving, marine safety, and federal law enforcement already has his number, because he built the credential plan the same way he planned every operational dive: with a brief, a backup, and an abort criteria ready before he went in.