Marina and Boat First Aid Kit Requirements

A marina office and a boat are both first-aid environments, but neither one is a land-based clinic or workplace station moved outdoors. Response is delayed by however long it takes a boat, helicopter, or shoreside EMS crew to actually reach the water rather than the drive time an ambulance needs on a road grid; the environment is unstable underfoot in a way no office floor is; metal tools corrode from salt air and spray even when they never touch water directly; and the single most distinctive risk on this list — cold-water immersion — barely appears on a land-based checklist at all. This guide covers what a marina office, dockmaster station, or vessel actually needs to stock, the U.S. Coast Guard and vessel-class regulatory picture (which is more fragmented than a single national standard), and the water-specific storage and readiness considerations — corrosion, waterproofing, and hypothermia response — that a generic land-facility checklist never has to plan for.

Where to source this: LAC (lac.us), CASRAI’s sister medical-supply business, stocks the core categories below directly — First Aid Kits and Emergency Blankets, the latter specifically relevant to the cold-water immersion readiness covered further down. Nothing here is a paid placement or a third-party affiliate link; it’s a real, first-party sourcing option under the same operator as CASRAI.

Why a Marine Kit Is a Different Design Problem Than a Land-Based Station

Four things separate a marina or vessel first aid kit from the office, clinic, or facility checklists this site covers elsewhere, and each one changes what belongs in the kit and how it’s packaged:

• Delayed, variable response. A shoreside ambulance drives a known road grid. A marine medical emergency waits on whichever combination of a marina’s own response, a nearby vessel with first-responder training, Coast Guard or state marine-patrol assets, or a land-based crew meeting the boat at a dock is actually available — the time to definitive care is longer and far less predictable than a land facility’s, which is the core reason a marine kit needs more self-sufficient treatment capacity than a comparable land-based station, not just a waterproof case.
• Instability underfoot. Treating someone on a moving deck or a floating dock in a wake is a different physical task than treating them on a fixed floor. Kits that rely on a rigid tray of loose components spill; a kit built around secured, modular pouches inside a bag that can be braced against a body or a rail holds together when the platform doesn’t.
• Corrosion. Salt air alone — not just direct immersion — degrades unprotected steel. Scissors, tweezers, and splinter forceps in a marine kit should be genuinely corrosion-resistant (marine-grade stainless, or plastic-composite where the tool doesn’t need a metal edge), not the painted or plated steel that’s adequate in a dry office cabinet.
• Water intrusion. Spray, rain, and the occasional dunked bag are routine on the water, not an edge case. Contents that would survive fine in a wall-mounted office cabinet — gauze, adhesive dressings, instant cold packs — degrade fast if the outer case isn’t genuinely sealed, not just splash-resistant.

The Regulatory Picture: USCG, Vessel Class, and State Law

Unlike the general workplace case, where OSHA’s 29 CFR 1910.151(b) plus the ANSI/ISEA Z308.1 consensus standard gives every employer a single practical target (see CASRAI’s Corporate First Aid Station Supply Checklist for how that baseline works), marine first aid requirements are genuinely fragmented by vessel class rather than governed by one federal content list:

• Coast Guard-inspected commercial vessels — small passenger vessels, towing vessels, and other classes that operate under a Coast Guard Certificate of Inspection (COI) — carry medical and first aid equipment obligations tied to that specific vessel’s class and COI under Title 46 of the CFR. The exact contents and crew-training requirement vary by vessel type and passenger/crew capacity; verify against your specific vessel’s COI and the marine inspector who issued it rather than assuming one generic list applies across every commercial vessel class.
• Recreational vessels are governed federally on safety equipment mainly through PFD, visual distress signal, fire extinguisher, and sound-signaling requirements — there is no single federal mandate specifying first aid kit contents for a private recreational boat the way ANSI Z308.1 functions as the de facto workplace target. In practice, what a recreational boat carries is driven by state boating law (which varies by state), a marina’s own dockage/slip-lease conditions, and marine insurers, more than by a single Coast Guard content list.
• The U.S. Coast Guard Auxiliary’s Vessel Safety Check program is the practical benchmark most recreational boaters and marina safety officers actually use, since it evaluates a boat’s overall safety equipment including first aid readiness against Coast Guard-informed criteria even where a specific content list isn’t federally mandated.

The practical takeaway: don’t treat “USCG-compliant first aid kit” as a fixed checklist the way “OSHA-compliant” functions on land. Confirm the actual requirement against your vessel’s COI (for commercial operations) or your state boating authority and marina operator (for recreational slips and dockside stations), then use the baseline below to fill in the gaps a bare regulatory minimum won’t cover.

ANSI/ISEA Z308.1 as a Starting Baseline, and What Marine Duty Adds

Even without a marine-specific federal content mandate, ANSI/ISEA Z308.1, Minimum Requirements for Workplace First Aid Kits and Supplies, remains a reasonable starting structure for a marina office or dockmaster station — it’s a workplace, and Z308.1’s Class A (basic-injury coverage for lower-risk, lower-incidence workplaces) and Class B (broader supply range and higher quantities for higher-risk or higher-traffic environments) tiers give a defensible baseline to size against. A staffed marina office or fuel dock, with public foot traffic, dock work, and occasional trauma from lines, cleats, and machinery, generally sizes closer to Class B than Class A. Because the standard is copyrighted, this guide describes structure rather than reproducing exact fill counts — check the current edition or a kit vendor’s Z308.1-compliant listing for line-item quantities. What marine duty adds on top of that land-based baseline:

• A genuinely sealed, buoyant or float-rated outer case, not a Z308.1 kit’s standard wall-mounted cabinet or soft bag.
• Corrosion-resistant instruments (see above) in place of standard-finish steel.
• Seasickness/motion-sickness relief, which has no equivalent in a land workplace kit.
• Marine-specific bite/sting coverage relevant to the local water (jellyfish, stingray, or regional marine-life exposure appropriate to the body of water).
• Fishhook removal supplies where the site involves recreational or commercial fishing activity.
• Hypothermia and cold-water immersion readiness — covered on its own below, because it’s substantial enough to need more than a line item.

Stocking the Marina Office or Dockmaster Station

A staffed marina office, ship’s store, or dockmaster station is functionally a fixed workplace first aid station, sized to the volume in the section above, with these additions:

• Bleeding and wound care — adhesive bandages in multiple sizes, sterile gauze pads and roller gauze, adhesive tape, at least one trauma/pressure dressing for a laceration from a line, cleat, or prop strike, which draw deeper and more heavily bleeding wounds than a typical office injury.
• Burn care — relevant given fuel dock proximity and engine-compartment work; burn gel or dressings for minor thermal burns.
• Splinting — rigid or SAM-type splints for the fall and impact injuries common on docks and gangways, especially at tidal marinas where a gangway’s slope changes through the day.
• Eye and skin irrigation — for fuel, solvent, or antifouling-paint exposure common around a fuel dock or haul-out yard.
• An AED — see the dedicated section below.
• A cold-water immersion / hypothermia response kit — see below; this is the item most land-based checklists skip entirely and the one a marina cannot skip.

Stocking a Vessel Kit

A boat’s own kit is a different inventory than the marina office’s fixed station — smaller, more compact, and built to survive being underway rather than sitting in a cabinet:

• A compact, genuinely waterproof (not just water-resistant) hard case or dry-bag, sized to the vessel and secured against a bulkhead or under a seat rather than loose in a locker where it becomes a projectile in a hard turn or following sea.
• The same bleeding-control, wound-care, and splinting basics as the marina office kit, scaled down to the vessel’s typical crew/passenger count.
• Seasickness medication.
• A whistle, signal mirror, or other means to summon attention if the injured person needs to be found or the vessel needs assistance — not strictly a first aid item, but it belongs in the same reachable location given the delayed-response reality above.
• An emergency/thermal blanket for every person aboard the kit is realistically sized for, not just one — a single blanket in a kit built for a six-person vessel is a real, common under-stocking gap.

For larger charter or commercial vessels operating under a COI, the kit’s exact contents should track the requirement issued with that specific vessel’s inspection, not this general guidance alone.

Cold-Water Immersion and Hypothermia Response Readiness

Cold-water immersion is the risk category that most clearly separates a marine kit from every land-based checklist on this site. Immersion in cold water produces a well-documented sequence distinct from ordinary hypothermia exposure on land: an initial cold-shock response (involuntary gasping and hyperventilation in the first seconds to minutes, the phase most drowning deaths during cold-water immersion actually occur in, before core temperature has dropped meaningfully at all), followed by progressive loss of swimming ability and muscle coordination as the extremities cool, and only then by the slower drop in core body temperature that produces classic hypothermia symptoms — confusion, slurred speech, loss of coordination, and eventually unconsciousness. A fourth, less widely known phase — post-rescue collapse — means a person recovered from cold water can deteriorate further after being pulled from the water, which is why immediate rewarming and continued monitoring matter even once someone is safely aboard.

What this means for stocking, beyond the general first aid basics above:

• Emergency/thermal blankets in a quantity that actually matches vessel capacity, stored somewhere accessible without opening the whole first aid kit — a cold-immersion response often needs the blanket faster than it needs the rest of the kit’s contents.
• Dry, spare layers or a change of clothing where the vessel has the storage for it, since a wet person continues losing heat even after being pulled aboard.
• A plan for gentle, gradual rewarming rather than rapid direct heat (a hot shower or immersion in very warm water) or vigorous rubbing of the extremities, both of which can trigger dangerous circulatory shifts in someone who has been significantly chilled — know this before the moment it’s needed, not during it.
• Awareness that a cold-water casualty who seems to recover on deck still needs monitoring and, for anything beyond mild, brief exposure, professional evaluation — post-rescue collapse is a real phenomenon, not a reason to skip medical follow-up because someone looks fine minutes after rescue.

Corrosion-Resistant and Waterproof Storage

Storage is where a marine kit most visibly differs from a land-based one, and it’s worth treating as its own line item rather than an afterthought to the contents list:

• Case rating — a genuinely sealed, gasketed hard case (commonly rated to an IP or IPX standard by the manufacturer) outperforms a soft bag with a roll-top closure for anything stored in an exposed cockpit or on deck; a soft dry-bag is acceptable for a kit stored below or in a dry locker.
• Buoyancy — a kit that floats, or is stored inside something that does, is worth the marginal cost on any vessel where the kit could conceivably go overboard with a person.
• Instrument material — marine-grade (316) stainless steel or plastic-composite tools resist salt-air corrosion far better than standard-finish steel; check any scissors, tweezers, or forceps in a kit purchased as a generic land-based first aid kit before assuming they’ll hold up to marine storage.
• Mounting location — a fixed bracket in a location the crew can reach without leaving the cockpit or helm in rough conditions beats a kit stowed in a below-deck locker that becomes hard to reach exactly when it’s most needed.
• UV exposure — a case stored on an exposed flybridge or open helm station degrades faster from sun than one stored below; check case and packaging materials for UV resistance if the storage location is permanently exposed.

AEDs at Marinas and on Larger Vessels

Cardiac events don’t wait for a boat to reach shore, and a marina’s delayed-response reality (see above) makes an on-site AED disproportionately valuable compared to the same device in a location minutes from a hospital. A staffed marina office or dockmaster station is a reasonable AED location on the same logic that puts one in any public-facing workplace; larger charter and passenger vessels, particularly those carrying members of the public rather than a fixed crew, should evaluate AED placement against the same criteria CASRAI’s AED Buying Guide covers for facility selection and compliance — that guide’s device-selection and program-management criteria (placement, maintenance, and use-authorization) apply to a marina or vessel exactly as they would to any other public-facing site; the marine-specific difference is protecting the device itself from the same salt-air and moisture exposure this guide covers for the rest of the kit.

Bloodborne Pathogen Exposure on the Water

Marina and boat first-responders face real bloodborne pathogen exposure risk — fishhook injuries, propeller and prop-strike lacerations, and line-handling injuries all produce active bleeding that untrained first-aiders may need to control directly. A marina that employs staff who may respond to these incidents should have a written exposure control plan covering PPE (gloves at minimum, in every kit, not just the office first aid cabinet), sharps handling for fishhooks and any medical sharps used in first aid, and a post-exposure response procedure, following the same structure CASRAI’s Bloodborne Pathogens Exposure Control Plan guide lays out for a fixed facility — the OSHA bloodborne pathogens standard applies to a marina employer’s own staff the same way it applies to any other workplace with reasonably anticipated occupational exposure to blood.

Restocking, Inspection Cadence, and Documentation

Marine storage conditions shorten the practical life of first aid supplies compared to a dry office cabinet, so inspection needs to run more frequently than a typical land-based schedule, not on the same calendar:

• Inspect seasonally at minimum, and after any incident where the kit was actually opened and used — a marina or charter operation running through a full boating season should check case seals, expiration dates, and corrosion on instruments at least once mid-season in addition to the start-of-season check.
• Check expiration dates on anything with one — ointments, medications, some dressings — since humidity inside an imperfectly sealed marine case accelerates degradation compared to a dry cabinet.
• Confirm the case seal itself (gaskets, closures) hasn’t degraded from UV or repeated opening before assuming the contents are still protected.
• Log inspections and restocks, the same discipline CASRAI’s other specialty checklists recommend — a dated log is what shows a kit was actually maintained if it’s ever questioned after an incident, not just a compliance formality.

How This Compares to CASRAI’s Other Specialty Checklists

Marina and boat first aid readiness sits in a distinct spot among CASRAI’s specialty-environment checklists: it shares the delayed-EMS-response logic of an EMS jump bag (a kit that has to be self-sufficient because help is genuinely far away, not just a few minutes down a hallway) and the workplace-baseline structure of the Corporate First Aid Station Supply Checklist for the marina office itself, while adding water-exposure and cold-immersion considerations neither of those environments has to plan for. It also shares the extreme-environment sizing logic of CASRAI’s Fire Station First Aid Supply Checklist — both start from a workplace baseline and scale up for a specific hazard the general office case doesn’t carry — even though the specific hazard (thermal and cardiac risk for firefighting versus water and cold-immersion risk for marine operations) is entirely different.

Frequently Asked Questions

Does the Coast Guard require a first aid kit on a recreational boat?

Not as a single, specific federal content mandate the way OSHA and ANSI Z308.1 function for a workplace. Recreational boat federal safety-equipment requirements center on PFDs, visual distress signals, fire extinguishers, and sound-signaling devices. A first aid kit is strongly recommended (the Coast Guard Auxiliary’s Vessel Safety Check evaluates for one) and may be required by your specific state’s boating law or your marina’s slip-lease conditions — confirm both directly rather than assuming a single national standard applies.

What’s different about a marine first aid kit versus a regular workplace kit?

Primarily storage and a few content additions: a genuinely sealed, often buoyant case; corrosion-resistant instruments; cold-water immersion and hypothermia response supplies (emergency blankets in particular); and, depending on the water body, marine-life sting or fishhook-removal supplies that a land-based Z308.1 kit doesn’t anticipate.

How many emergency blankets should a boat carry?

Enough for the vessel’s full passenger and crew capacity, not just one. A single blanket in a kit sized for six people is one of the most common real under-stocking gaps on recreational vessels, and cold-water immersion can affect more than one person in the same incident.

Do commercial charter vessels have different first aid requirements than private recreational boats?

Yes. A commercial vessel operating under a Coast Guard Certificate of Inspection has medical and first aid equipment obligations tied to its specific vessel class under Title 46 of the CFR, verified as part of that inspection. A private recreational boat does not carry a COI and is governed primarily by state boating law rather than a Coast Guard-issued content list.

Should a marina keep an AED on site?

It’s a reasonable addition on the same logic that justifies one in any public-facing workplace, and arguably more valuable given how much longer EMS response can take reaching a marina or a vessel on the water compared to a shoreside facility. See CASRAI’s AED Buying Guide for device selection and program-management criteria.