Spring recommissioning is the bookend to winterisation. It is also a chance to catch the small problems that quietly developed over the lay up, before they spoil a cruise.
The engine first
- Refit the raw water impeller with a smear of glycerin or rubber grease. Never petroleum based.
- Check the raw water filter, then open the seacock and confirm a healthy flow before you start.
- Inspect coolant level, belt tension, hose clips, and look for any weeps under the engine.
- Top up engine oil if needed, even if you changed it in autumn. Crankcase condensation is real.
Below the waterline
If the boat has been lifted, check anodes are at least half their original mass and replace any that look thin. Antifoul touch ups should be done before relaunch. If the boat stayed in, plan a diver inspection or lift in the first weeks of the season.
Fuel system
- Check the primary filter bowl for water. Drain off anything that has settled.
- Top the tank if you did not fill it in autumn.
- If the boat sat with low fuel, fit fresh filters before the first long cruise.
The river trial
Once everything is back together, do a proper short trial. Run the engine up to temperature under load, watch the exhaust for water, listen for new noises, and check for leaks once you are back alongside. A 30 minute trial in April saves a breakdown call in June.
