U-Boot Type XXI has a tendency to fall into oscillation, which was a problem similar to those that took the first torpedo (u-boot is very unstable longitudinally, at least in SH3). To avoid this, do not dive deep on the controls, but in a ballast tank at a speed of 0 kts in the dock. Only then should move. When the first attack ends (usually pass in no more than 4 km), you can usually safely surface and and pass the rest of the way through the fjords.
To avoid major damage due to hitting the bottom of the bow or stern as a result of these oscillations you can install "Seabed repairs" mod which forms on the u-boat bottom extra armored zone.
|