I met with a shipyard today about my steel trawler build. They showed me the exhaust and cooling systems which they use on workboats and tugs of about my boat's size.
The engine and hydraulic oils and also the engine coolant are cooled in a closed loop keel cooled arrangement (split pipe welded to hull). However the engine exhaust system is cooled down with salt water then the exhaust runs up through a normal dry stack.
They claim that cooling the exhaust reduces exhaust noise by half.
My configuration will be a single engine of about 180 hp, a Tier 3 compliant. I am interested in reducing the complexity of my boat and eliminating thru hulls, strainers, injection elbows, etc.
So my question is if anyone has experience with such a system and if the benefits are worth the added components?
The engine and hydraulic oils and also the engine coolant are cooled in a closed loop keel cooled arrangement (split pipe welded to hull). However the engine exhaust system is cooled down with salt water then the exhaust runs up through a normal dry stack.
They claim that cooling the exhaust reduces exhaust noise by half.
My configuration will be a single engine of about 180 hp, a Tier 3 compliant. I am interested in reducing the complexity of my boat and eliminating thru hulls, strainers, injection elbows, etc.
So my question is if anyone has experience with such a system and if the benefits are worth the added components?
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