[Iron Budokan]

Thank goodness not everything in the game is modeled! This passage is from Buchheim's novel, The Boat:

If a hundredweight of potatoes is moved from the control room to the bow compartment when the boat is submerged, bow heaviness results. To compensate this, water has to be pumped from the control room to the stern cell--only half the weight of the potatoes, though, because the water for the trim cell is taken from the opposite end of the boat. The foreship is thereby made lighter by one half the weight of the potatoes. If a hundredweight of potatoes were taken from the E-motor room into the bow compartment, the trim calculation would, of course, be different. In that case water would have to be pumped from the bow to the stern.

Sheesh, talk about micromanagement!