I couldn’t find an answering while searching so …
What level should our BlueROV be floating at?
Matter of opinion depending how you work whith the ROV
I would say much heavier then picture.
Also keep in mind that seawater is more dence and gives more lifting then fresh water.
I usually make the ROV just float, ie almost nothing over surface in fresh water.
That gives slight positivity in sea water.
So, working close to bottom, I have vertical thrusters pushing water upwards, avoiding bottom silt.
I’ll take out some of the buoyancy foam.
Put weights on bottom to balance n then buoyancy can be used for heavy lift later if needed