A sea trial is not just a fun day hout on the water.
It is your chance to see how the boat behaves when it is actually moving. Some problems do not show themselves at the dock, in the marina or even during a visual inspection.
Before buying a used cruising boat, a sea trial can help you compare what you were told with what the boat actually does.
Watch the engine from cold
If possible, see the engine start from cold. A warm engine may hide hard starting, smoke, poor charging or other issues. Watch how it starts, how it sounds and whether it settles into a steady idle.
Pay attention to:
- hard starting
- smoke
- unusual smells
- vibration
- warning lights
- charging
- cooling water flow
- temperature
Also watch how the engine shifts into gear. Forward and astern should engage cleanly, without excessive delay or clunking.
Check steering and handling
A sea trial is a good time to feel how the boat handles. Check the steering response, visibility from the helm, and how easy it is to manage the boat in close quarters. Notice whether the helm feels stiff, heavy or unbalanced. Feel for vibration, loof for smoke, noise or overheating.Don’t ignore odd sounds or smells.
One small symptom may be nothing. Several symptoms together may suggest engine, shaft, propeller, cooling or alignment issues that need a specialist check.
Test systems while underway
Where appropriate, test or observe:
- instruments
- autopilot
- windlass
- steering
- engine controls
- navigation gear
- charging system
- pumps
- electronics
Do not assume something works because it is listed in the inventory.
Sail the boat
If you are buying a sailing boat, haul up and unfurl the sails. Pay attention to the feel of the helm, sail handling, reefing setup, winches, sheets, blocks and how practical the boat feels. It’s not about about judging performance like a race boat. It is about whether the boat suits the way you plan to cruise.
Compare what you observe with what the seller said
After the sea trial, go back to your notes. Did the boat match the description? Did the engine behave as expected? Did the systems work? Did anything feel harder, noisier, smokier or more awkward than you expected?
A sea trial does not replace a survey, mechanical inspection or rig check, but it can show you whether you are moving forward to the next step in the purchase process.
Use the sea trial to really get a feel for the boat and check as many systems as possible.
Want a clearer way to assess a boat before you buy? The Buying a Cruising Sailboat course walks you through viewing, survey, sea trial and final decision checks before you commit.
Continue Your Boat-Buying Research
If you have not already arranged a survey, read How Do I Choose a Boat Surveyor?
Before moving towards a purchase, check What Paperwork Should I Check Before Buying a Boat?
After the sea trial and survey, use How Do I Know Whether to Buy a Boat or Walk Away?