LTC, USA, RET wrote:
Bill, all, I can relate on every level of this thread!
1. My port engine burns more fuel than my starboard, for no apparant reason.
2. In the last month my outdrives/boat have been completely covered with this furry/carpet-like growth...
3. I live on Thomas Point in Annapolis and the crab pots drive me crazy. Last weekend headed into the South river, they were inside the 'no-crab-pots' bouy lines, in the channel. What a pain. I have yet to wrap one up but I do feel for you. What a hassle this has been for you (I'm knocking on wood).
So, any idea what is causing this massive growth on the boats in the bay? Any easy way to get it off? My son went down for an hour last weekend (braving the jeelyfish no-less) and got some of it off with a stiff brush but said most of it stuck like it was glued on!
also, I'm a new boater... what strainer should I be checking for this growth?
Each engine has it's own strainer. Likewise there's one strainer each for the generator (if you have one) and for the air conditioner. My engine strainers are right near the engines themselves, in the engine compartment. The genset and AC strainers are in the cabin, underneath the cushions in the mid-cabin berth.
When checking strainers you have to CLOSE the sea cock for it FIRST. And if you're not opening/closing the sea strainers on a regular basis you'll want to be careful about operating their lever. It can tend to stick a bit. A slow steady pressure on the handle should work. What you want to avoid is pressing very hard against that lever and breaking the sea cock. On a new boat it's not very likely. But as boats age there's always the chance that the metal could get corroded and weaken. You don't want that happening and leaving you with a fountain of water coming into the boat. Slow, even pressure is good. This is why it's a good idea to operate the sea cocks regularly. You want them working smoothly and be able to know how to tell when they're not.
Anyway, close the sea cock then loosen the wingnuts on the top of the strainer (this assumes Perko strainers, Groco units require a spanner tool) to remove the top cover. Once that's off you can extract the strainer basket. Take it up on the pier and clean it using a hose. Also clean out the strainer itself. I use a kitchen sink bottle sponge just for the purpose. It doesn't have to be spotless, just free of debris. Any water that collects will get pumped out by the bilge pump. You can use a wet vac or towels otherwise. Reinstall the strainer basket and carefully replace the lid. The lid will probably have an O-ring inside it and you want to make sure that seats properly. Don't overtighten the lid because you don't want to deform the O-ring. Just snug it up to VERY finger-tight (no wrenches here).
I'm not sure what I'm going to do to avoid the growth that's accumulating this season. I'll probably have a diver come out a bit more often. What I do know about the growth is that you want to remove it BEFORE it hardens. If you pull the boat out you want to get that crap off there while it's still wet. Use a pressure washer, just not at full blast if it's a gas powered one. Just enough to know the gunk off, not etch into nearby bottom paint. I have a small electric residential-grade pressure washer that I might use to clean mine. I'll just dunk the pressure end of the wand down into the water to blast the tabs clean.