Craig Maile, first mate with BoatSmart HQ on the Gold Coast, shares some simple preventative maintenance tips to help keep your boat in good condition and avoid unexpected repairs.
Engines and generators: Check the oil, coolant and gearbox fluid levels in your engine. Low levels may signal leakage or larger problems that need immediate attention. Check the engine strainers for debris and keep the strainers clean. Check for wear and tear on belts, because if there is dust underneath the belts, it could mean the belt is failing and should be changed at your next annual service. Lastly, keep the bilge clean so that you can spot leaks easily if they do occur.
Hydraulics: Most boats these days will have at least one hydraulic system – the steering – but other common systems include garage door openers, high/low platforms, thrusters, stabilisers and davit cranes. Check hydraulic fluid levels regularly by examining the reservoir and check seals and hose ends in the system for leaks. If you have a steering heat exchanger, remember to check the quality of the anodes (there’s more on anodes to follow). If you attempt to top up the hydraulic fluid yourself, keep in mind that some systems need to be bled when topped up.
Shaft seals: These should be part of your predeparture checks. To detect leaks, it is crucial to check the seal while the shaft is spinning, meaning the engine needs to be running. If water ingress is found, address it immediately. Most systems come with a spare seal in the casing so remember to replace the used spare after installation. Also, ensure the cutlass bearing is checked for play during every yard period.
Rudders: Rudder seals should be checked regularly. Any leaks in the general area could be either the seal or the flange. Next time your vessel is out of the water it is good to do a bump test to see how much play is in the rudder/s. If there is play it is best to have the rudder realigned and checked by a marine professional.
Anodes: These are called ‘sacrificial anodes’ because they protect the metals in crucial components, such as the props and shafts, from corroding. Not all anode deterioration is obvious though, as some are installed internally in systems of a vessel and can corrode at the same rate, if not faster, than exterior anodes. Make sure to check these at least once a year.
Electrics: Stray electrical currents can lead to the rapid breakdown of metal parts on your boat. This usually happens when electrical systems aren’t properly grounded, especially if new equipment has been added. If you notice that your anodes are wearing out faster than usual, this is likely the problem and should be addressed quickly to avoid costly damage.
Battery health: Regularly check your boat’s batteries by cleaning the terminals and making sure the fluid levels (if applicable) are where they should be. Signs that your batteries need replacing include heavy corrosion on the terminals, swelling or bulging of the battery casing, and a noticeable drop in performance. If your batteries seem to be losing power faster than usual, it’s a good idea to have them tested to see if they need to be replaced.
Anchor servicing: Since anchors are constantly exposed to the elements, they need regular care. You should visually inspect your anchor, including the connections, once a month, as corrosion is common. Protecting the terminals with a product like Lectra Shield can help prevent this. If your anchor winch has a grease fitting, it should be greased every three months to keep everything working smoothly and should be serviced annually.
Antifoul: Different antifouls work better for different conditions. Which type you need depends on where you use your boat, the type of boat, and how often you cruise. Some areas with faster marine growth or warmer water may require a specific type of antifoul, and faster boats might need a high-performance system. If you notice increased marine growth, reduced performance, unusual noise or vibrations, or visible wear on your hull or metal components, it might be time to have the coatings checked and reapplied.
Detailing: Regular exterior detailing is crucial to maintaining the condition of your boat and protect it from long-term damage. Exposure to salt water, UV rays, and environmental elements can cause oxidation, corrosion, and fading, which not only diminishes the boat’s appearance but can also lead to costly repairs if left unchecked. A monthly detailing plan that includes wash downs, waxing, teak treatment, and metal polishing helps prevent this wear, keeping your boat looking sharp and preserving its value.
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