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Engine sound insulation

2488 Views 11 Replies 8 Participants Last post by UnionPacific, Nov 24, 2014

Rusty123

Discussion Starter · Nov 22, 2014

My boat has sound insulation (1 inch foam sheeting with foil facing) on the bulkheads immediately surrounding the engine (Yanmar 2QM15). Not sure if it's original or PO installed, but I suspect the latter.

But the boat really doesn't have a true "engine room", so the bulkheads where the insulation is installed aren't continuous, which means that the engine is not encapsulated by insulation, and to my layman's way of thinking the sound can travel pretty much anywhere. For example, there is only a thin, uninsulated panel between the engine and quarter berth.

I removed some of the insulation to fix some wiring, and doing so made a big improvement in engine access clearances, so I'm thinking about removing it all.

Any reason I shouldn't do this, other than causing (possible) noise level increases?

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MarkofSeaLife

· #9 · Nov 22, 2014 (Edited)

Rusty123 said:
so I'm thinking about removing it all.

Any reason I shouldn't do this, other than causing (possible) noise level increases?

My boat has a bit of quite crappy foam as sound proofing. In the aft cabin the back end of the engine bay is removable and theres a 1 cm gap so plenty of noise gets out.

But heres the thing, I have slept in that cabin at sea numerous times with the engine going. It just seems to blink off when I nod off! Weird.

So a noisy engine right next to someones head may appear to be a real pain, but its a constant noise and one soon gets used to it

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