It might not "sink" to the bottom of the pond, but it will still fill with water and go under and capsize.
I can't recall off the top of my head if the newest ones still use foam. I think so, but I couldn't swear to it and I'm not near any of them.
yeah, the foam just prevents it from sinking to the bottom, but it will capsize and sink about 4-fifths submerged under water. On the 3050 style ships, including the later models (skull pirate ship and blackbeard's ship), they all come with styrofoam in the bow of the ship. When it capsizes, all but the bow sinks beneath the water, leaving the bow sticking upwards towards the sky. On the old 3940 ship (same hull as the new 5135) there is foam at the very bottom below the gundeck. When it capsizes, the ship turns completely upside down, masts pointing downward to the sea floor, and the bottom of the hull floating upside down facing the sky.
The 4290 has foam too inside, and the gunboats (like 4444) even have some foam in the stern. When the gunboats sink, all but the stern gets submerged. The 4290 flips upside down like the 3940.
prevent capsizing AND sinking at all, I've found that filling the ENTIRE hull with foam PLUS adding EXTRA ballast takes care of that.
I hope the fact that the 5135 comes with no ballast is an indicator that they somehow improved its stability and made it not just sink-proof, but capsize-proof as well. Anyone know how she handles yet?