Type XXI tactics

[Marcello]

Has anybody written something like a tactical primer for the type XXI?
For now I have been trying to figure out an optimal snorting routine.
Initially I came to periscope depth at dusk, topped the battery, dived and spent the rest of the night at 4 knots, came up again before dawn, topped again, dived and spent the day at 2 knots. However this left me low on oxygen in the afternoon, so I added a third snorkel run to renew supply, but without staying up long enough for a full battery recharge. I also increased day speed to 3 knots. Any thoughts? Do people prefer shorter but more frequent snorkel runs?

[Jimbuna]

The TypeXXI imo gives only two advantages:

Larger salvo of forrad eels and a sprint ability whilst submerged.

I replenish oxygen just like any other U-boat type...as and when needed.

[Shkval]

3 hours submerged at 3 knots, 30 minutes recharging, this works well with IXB, with XXI you can probably achieve even better results, maybe 4 knots for 3 hours?

[Hinrich Schwab]

Has anybody written something like a tactical primer for the type XXI?
For now I have been trying to figure out an optimal snorting routine.
Initially I came to periscope depth at dusk, topped the battery, dived and spent the rest of the night at 4 knots, came up again before dawn, topped again, dived and spent the day at 2 knots. However this left me low on oxygen in the afternoon, so I added a third snorkel run to renew supply, but without staying up long enough for a full battery recharge. I also increased day speed to 3 knots. Any thoughts? Do people prefer shorter but more frequent snorkel runs?

While the XXI boat is technically superior to the previous models, power management is the issue. Since none of the waters are really safe enough for dedicated surface travel for any length of time considering the XXI's late entry, A combination of snorkeling and dedicated battery are necessary. Since SHIII lets you "cheat" with the snorkel mast up by exceeding maximum snorkeling speed, you can go faster than you should be able to without damaging the mast. For realism's sake, never exceed 6 knots snorkeling and recharge when the battery is around 75%. While snorkeling, your diesels will make a ton of noise and render the hydrophone moot, so you want to be extra vigilant or cease snorkeling at regular intervals for a sound check. As long as you have at least BOLD 3 and 75% charge, you can run from any trouble that finds you... or at least make one grand show of it.