[Hitman]

Krabb the problem is that there are times where uboats were trimmed positive and times negative. But we can't choose, we can only trim them one way by modding. Thus NYGM took as option the negative trim, as it was considered to suit better the majority of situations. Basically, it covers well two things: A) Being unable to stop and hover at constant depth when approaching a convoy (This can be achieved also and more historically correct with positive buoyancy, as uboats did so and the main risk was to broach the surface) B) Needing forward motion to prevent from sinking when evading at depth (Pumps could not work as they were noisy, and water accumulated in the bilge making the uboat heavier). As you see, for the small price of some innacurancy in A), we get an overall correct effect.