A Practical Boat Service Schedule
A sound boat service schedule has three layers: quick checks every time you use the boat (bilge, batteries, telltale water flow), a monthly pass over anodes, hoses, pumps and safety gear, and an annual engine service plus haul-out for antifoul and running gear. Boats that get this rhythm rarely suffer the expensive failures that come from neglect.
Every time you use the boat
Check the bilge is dry, the batteries are holding charge, the fuel level is honest, and that the engine telltale or raw-water flow is strong on start-up. Flush after saltwater use.
Monthly
Inspect anodes, look for weeping hoses and clamps, run the bilge pump manually, test navigation lights and check safety gear expiry dates — flares, EPIRB battery, extinguisher service tag.
Annually
The annual layer is where a mechanic usually earns their keep.
- Engine service: oil, filters, impeller, plugs where applicable
- Antifoul and anode replacement at haul-out
- Gearbox or leg oil change
- Standing rigging inspection for sailing boats
- Full electrical check including shore-power leads and RCDs
Frequently asked questions
How often should a boat engine be serviced?
Most manufacturers specify a service every 100 hours or 12 months, whichever comes first. Low-hour boats still need the annual service — oil degrades and impellers perish with time, not just use.
How often should I antifoul my boat?
In Australian waters, plan on antifouling every 12–18 months for a boat kept in the water. Warm northern waters grow fouling faster; trailer boats that live ashore can go much longer.
Can I do my own boat servicing?
Basic checks, flushing and fluid top-ups are well within owner capability. Keep receipts and a log for any DIY work, and leave fuel systems, 240V electrical and gas work to licensed trades — insurance claims can hinge on it.
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