Sailing Safety Guides

Medical Problems

Medical Problems At Sea

At sea, even a small medical problem can become a seamanship problem because help is slower and the boat still needs to be sailed.

The aim is not to replace medical training. The aim is to notice problems early, keep the boat safe, and know when to ask for help before the situation becomes too hard.

First Principle

Medical problems reduce the crew

On shore, one sick person is one sick person. At sea, one sick person may also mean one less watchkeeper, one less person to reef, one less person to cook, and maybe the skipper is the one affected.

Good seamanship means noticing this early. If the crew is getting weaker, the boat should become easier to handle, not harder.

First actions

Make the boat safe first if immediate sailing danger exists.
Move the person away from deck danger, cold, heat, smoke or moving gear.
Put on lifejacket and harness if there is any chance they must move outside.
Check breathing, bleeding, consciousness, pain, temperature and hydration.
Write down time, symptoms, medication, pulse if you can measure it, and what you have done.
Call for medical advice early if you are unsure.

Writing down simple facts helps because stress and tiredness make memory unreliable.

Seasickness

Seasickness can look ordinary, but it can become serious when it causes dehydration, exhaustion and poor decisions. A seasick crew member may stop drinking, stop eating, stop keeping watch and stop thinking clearly.

Start medication early if it is part of your plan and safe for that person.
Keep the person warm, clipped on and away from fall risk.
Use small drinks often instead of waiting for thirst.
Reduce sail or change course if motion is making the whole crew ineffective.
Do not leave a very seasick person alone on deck.

Dehydration and low energy

People make worse decisions when they are dry, hungry and cold. This is easy to miss because nobody wants to stop sailing to drink water or eat something simple.

Keep water, warm drink or easy food ready before bad weather.
Use small regular amounts if the stomach is unsettled.
Watch for headache, confusion, weakness, dark urine or unusual irritability.
Do not wait until the watchkeeper is already failing.

Cold and hypothermia

Cold does not need freezing weather. Wet clothing, wind, fatigue and night watches can lower body temperature enough to affect judgment and coordination.

Get the person out of wind and wet clothing if possible.
Add dry insulation, hat and warm sweet drink if conscious and safe.
Reduce deck work and shorten watch times.
Take confusion, clumsiness and shivering seriously.

Heat illness

In hot climates, heat can be just as serious. Sun, engine room heat, poor sleep and dehydration can make a person confused, weak or dangerously overheated.

Move to shade or cooler air.
Cool with water, wet cloths and airflow.
Drink if conscious and not vomiting heavily.
Call for medical advice urgently if confusion, fainting or very high temperature appears.

Cuts, burns and crush injuries

Boats have winches, blocks, hot engines, boiling water, knives, sharp metal and heavy moving objects. A small injury can also become infected in a wet salty environment.

Stop serious bleeding with pressure.
Cool burns with clean cool water when possible.
Clean and dress wounds early.
Remove rings before swelling starts if a hand is injured.
Watch for increasing pain, redness, swelling, fever or loss of function.
Call for advice if the injury may need stitches, antibiotics, evacuation or pain control beyond your kit.

If the skipper is affected

This is uncomfortable to think about, but it matters. If the skipper becomes sick, injured, exhausted or confused, the boat still needs command.

Show at least one other person how to call for help.
Keep emergency cards near the radio and navigation station.
Teach simple steering, engine stop/start, reefing basics and how to find position.
Make sure crew know where medication, first aid kit, grab bag and lifejackets are.
Do not let pride stop an early Pan-Pan or medical advice call.

Singlehanded sailing makes this harder. Then the honest answer may be to make the boat easier much earlier: reduce sail, eat, drink, sleep in short safe periods and avoid entering difficult water when not fully clear.

Medical information card

For each person on board, a simple card can save time:

Name, age and emergency contact.
Allergies.
Medication and dosage.
Important medical history.
Blood type if known.
Doctor or insurance contact if relevant.

First aid kit discipline

A first aid kit is only useful if it is dry, complete and understood.

Check expiry dates.
Keep a written inventory.
Store medicine away from heat where possible.
Separate daily medicine from emergency medicine.
Know what you are trained to use.

Medical advice call template

Before calling, write the facts if you can. The call is easier when the person on the other end does not have to pull basic information from a tired crew.

Position, time, course, speed and nearest safe harbor.
Patient age, sex if relevant, main symptom, time started and whether it is improving or worsening.
Breathing, consciousness, bleeding, pain, temperature, pulse if known and ability to drink.
Medication already taken, allergies, known illness and injuries.
Weather, crew strength and whether evacuation from the boat is realistic.

Red flags offshore

Call early when symptoms are serious, changing quickly, or reducing the crew's ability to sail the boat.

Chest pain, breathing difficulty, stroke signs, severe head injury or unconsciousness.
Uncontrolled bleeding, major burn, suspected broken neck/back/leg, or crush injury.
Confusion, fainting, severe dehydration, heat stroke or worsening hypothermia.
Severe abdominal pain, allergic reaction, infection signs, or pain that cannot be controlled.

Calling for help

If you call for medical help, give position, vessel name, number of people, age and condition of the patient, symptoms, vital signs if known, medication given and how quickly the situation is changing.

Do not wait until you know the perfect diagnosis. At sea, the important question is often whether the person can safely remain on the boat until the next harbor, or whether advice, evacuation or rescue planning must start now.

How this connects to SailingKSF

Medical readiness connects to calling for help, night watch safety, heavy-weather preparation and Passage Companion storage notes. If someone asks for the first aid kit, medicine list or emergency contact, the answer should not be "somewhere".

Calling For Help Night Watch Safety Passage Companion

WHO International Medical Guide for Ships - Medical reference for ships. It is not a substitute for training or telemedical advice, but useful background for offshore medical planning.
Red Cross first aid training - First-aid training and course information. The important point for a boat is to train before the passage, not during the emergency.
World Sailing Offshore Special Regulations - Offshore racing rules, but also a useful structured benchmark for yacht safety equipment, storm preparation, emergency steering, liferafts and training.
RNLI yacht sailing and motorboating safety - Practical safety advice from a rescue organization, useful for thinking about lifejackets, calling early, preparation and what rescuers need from you.

Feedback For Medical Problems At Sea

If you have medical, offshore, first aid or rescue experience, I would be glad to read what should be added or corrected.

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Treat the person and the boat

A medical problem at sea is never only medical. The boat, weather, crew fatigue and distance to help are part of the treatment plan.