The short version is: should I be worried about bass transmission through water into my neighbors' hulls?
I am renovating a small houseboat (12x30 ft) to live on. It is one large room, and I plan on putting my reasonably large hifi system into it (260W/channel at 8Ω). One side of the boat is glass windows, the other is a plywood wall with an ~8" cavity with studs. The floor is a plywood floor, and the hull is a fiberglass shell with marine ply inside.
I am familiar with audio transmission/reflectance/resonance in, say, an apartment context, which can be roughly modeled as adjacent resonant cavities. How will transmission differ through water? Will I have higher transmission at bass frequencies? The houseboats adjacent to mine have thick concrete hulls (say, 6-12"), so maybe the point is moot and I should be only worried about transmission over the surface of the water, which I know is highly reflective.
tl;dr am I going to pwn my neighbors with bass through the water or should I be more worried about the glass wall and transmission through the 12 ft of air separating the boats? What other factors may contribute that I may be missing?
Thank you for your help.