Finally, seawater supplies to generators are another area where manufacturer instructions are often disregarded or only partially observed. Beginning with the intake, generators should not be equipped with scoop strainers (hull strainers are covered in detail in Professional BoatBuilder No. 127), as this arrangement might force water into a generator that is not running when a boat is under way. Ideally, and where practicable, strainers installed inside the boat should be mounted below the waterline to reduce the likelihood of air locks. Hose for seawater supply, from seacock to the generator and in anti-siphon valves, should be specifically rated for the application, preferably designated J2006R Raw Water and Wet Exhaust Hose. An even more conservative approach will include wire reinforcement, making the hose virtually crush- and kink-proof as well as resistant to flattening when exposed to high vacuum (during an intake clog, for instance). [links]