The Offshore Kit

Best for:

• Bluewater voyages, transpacific, transatlantic, international 

• Expedition cruising, charter operators, professional captains

• Crews 24+ hours from definitive care for any portion of the route

• Operators integrating with Tether Medical for prescription augmentation

Not the right kit if:

• Coastal weekenders — the Coastal Cruiser is appropriately sized

• Untrained operators — many specialty items require training

• Day boats — the Dinghy Kit is the right cost-to-coverage match

Tools & PPE

• Waterproof hardshell case- 1

• Reference cards- 1

• Patient Assessment Quick Guide- 1

• MMG First Aid Manual- 1

• Patient Care Reports- 6

• Pens- 2

• Mini Sharpies- 2

• Nitrile gloves (pairs)- 15

• Hand sanitizer- 2

• N95 mask- 4

• Biohazard bags- 6

• Tweezers- 1

• Trauma shears- 2

• Headlamp- 1

Life Threats

• CAT tourniquet (CoTCCC-recommended)- 2

• QuikClot hemostatic gauze (3" x 24")- 2

• Roller gauze- 2

• Gauze pad (5x9)- 2

• Pocket mask (BVM-compatible)- 2

• CPR face shield- 1

• OPA (oropharyngeal airway) set- 1

• NPA (nasopharyngeal airway) set- 1

• Manual suction unit- 1

• Vented chest seal (twin pack)- 2

• Emergency mylar blanket- 2

Diagnostics

• Digital thermometer- 1

• Blood pressure cuff- 1

• Stethoscope- 1

• Pulse oximeter- 1

• Glucometer- 1

Wound Management

• 10cc irrigation syringe- 4

• 18-gauge syringe tip- 4

• Transpore tape- 2

• Decon sponge- 4

• Alcohol prep pads- 25

• Povidone-iodine pads- 25

• Hibiclens- 1

• Antibiotic ointment packets- 12

• Aquaphor packets- 12

• Band-Aids (10-piece assorted)- 10

• Knuckle bandages- 20

• Gauze (2x2)- 10

• Gauze (4x4)- 20

• Gauze (5x9)- 6

• Transparent dressing- 10

• Hydrocolloid dressing- 6

• Nose clip- 1

• Burn dressing- 4

• Burn cream packets- 12

• Blister Medic Kit- 1

• Dental Medic Kit- 1

• Tincture of benzoin- 6

• Steri-Strips (3-pack)- 8

• Liquid skin- 4

• Skin stapler + remover- 1

• Musculoskeletal

• SAM splints- 2

• Triangular bandage- 4

• ACE bandage- 6

• Cloth tape- 2

• Coban- 4

• Cold packs (instant)- 2

• Heat packs (instant)- 2

Environmental

• Emergency mylar blanket- 2

• Water purification tablets- 6

• Electrolyte mix- 12

• Lip balm (SPF)- 2

• Sunscreen packets- 4

• After-bite- 6

Eye Care

• Emergency eyewear- 1

• Eye irrigation solution- 1

• Sterile eye pads- 4

• Eye drops- 1

Medications (OTC)

• Acetaminophen 500mg (2-pack)- 16

• Aspirin 325mg (2-pack)- 16

• Ibuprofen 200mg (2-pack)- 16

• Diphenhydramine 25mg (2-pack)- 12

• Afrin nasal spray- 1

• Glucose gel- 2

• Dramamine- 8

• Sea-Band- 2

• Pepto-Bismol (nausea/diarrhea)- 16

• Pepcid (heartburn)- 6

• Loperamide- 12

• Tinactin (antifungal)- 1

• Hydrocortisone cream (anti-itch)- 12

• Aloe- 2

• Swimmer's ear drops- 1

87 line items. Every divider is QR-coded — scan for usage guidance and indications. Tether-certified kit option available at checkout (annual freshness/expiration audit + Rx augmentation eligibility).

• Case: Eylar Large Protective Case (B0985TT1GK), IP67-rated, dual-latch, pre-cut foam, pressure-equalization valve

• External dimensions: 17.2" × 13.3" × 7.9"; internal: 16.3" × 11.8" × 6.3"

• Approximate weight: ~22 lb packed (case ~5.5 lb empty)

• Color: Marine red exterior with high-vis cross panel

• Internal organization: removable color-coded dividers, QR-coded per section, dedicated diagnostics module

• FDA-cleared devices for life-threat, airway, and diagnostic items; OTC medications only (Rx via Tether integration)

• Includes printed MMG First Aid Manual + Patient Assessment Quick Guide + 6 PCRs

• Built to integrate with Tether Medical prescription panel and annual certification

Q: Do I need training to use the OPA, NPA, and manual suction?

A: Yes. These are scope-of-practice items for trained responders — typically WFR/WEMT, Marine Medic, or equivalent. We list the MMG Marine Medical course as the recommended pairing on this product page.

Q: Why include a glucometer?

A: Hypoglycemia presents like a stroke, like intoxication, like a panic attack. Offshore, you can't rule it out without a finger-stick. A glucometer is the cheapest piece of diagnostic equipment that changes treatment decisions.

Q: What's the difference between a $2 mylar blanket and a $15 emergency bivy?

A: The mylar blanket is a wind/wet barrier — it slows convective and evaporative heat loss. A bivy is a sealed envelope that traps body heat and creates a microclimate. On a 4-hour exposure, the mylar wins on cost. On a 24-hour exposure on a deck in 40°F rain, the bivy is the difference between hypothermia stabilization and hypothermia progression. Offshore voyages need the bivy approach — we ship the kit configured for it.

Q: How do prescriptions work with Tether?

A: At checkout you can add Tether Medical. You complete an intake, take a virtual consult with a Tether physician, and (if appropriate) prescriptions are fulfilled by a third-party pharmacy and labeled to fit the Offshore Kit divider system. Tether covers the prescription panel; this kit page covers the OTC and device side.

Q: Is the kit FDA-compliant?

A: Yes. Every cleared device is sourced from an FDA-registered manufacturer with current labeling and IFUs. The kit is packed under a documented procedure with lot and expiration tracking and is eligible for Tether annual certification.

Q: Can a chartered vessel use this kit for compliance?

A: USCG inspected vessels have specific medical-equipment requirements that vary by route and class — we'd cross-reference your CFR section before claiming compliance. The Offshore Kit covers most of what's required for uninspected commercial use and recreational offshore racing under the Offshore Special Regulations (cat 0/1).

Not sure which kit is right for you? Our First Aid Equipment Guide breaks down exactly what's in each kit so you can compare contents side by side. And if you're weighing whether to buy or build from scratch, we wrote a blog post on that too.