Hello Mr. Tore,
I have a question about roll stability with the Type VII C U-Boat:
1. When FBT 2 and FBT 4 are in the fuel oil configuration, the U-Boat sets lower in the sea water and this would add to the roll stability because the center of gravity is lower compared to the water surface. Therefore, the U-Boat has a degree of roll stability.
2. However, when FBT 2 and FBT 4 are in the water ballast configuration, the U-Boat sets a little higher and the water line is raised. But, FBT 2 and FBT 4 empty tanks also provide stability against rolling.
Is one state better than the other for roll stability, or are they about the same?
Regards,
Don_