Vehicle request for the tank on the top and in the speech bubbles.
The top most tank and the boat tank are both the ka-mi without and with the seakeeping addons. The speech bubble tank is the LVT a-1 (says so in the speech bubble....really tiny though) but I cant say for sure.
The float is now a bathtub filled with water. Does this count as defeat the purpose?
Yes and no. As its only partially filled with water the vehicle will likely stay afloat. Granted it may very well cause a bad list and/or poor stability if kept while sailing. Also they are currently on land so its borderline irrelevant.