4-Player SOPs

[derstosstrupp]

Crash Dive
C – “Alarm!”

D/H – Sounds alarm bell.

Remaining procedures same as test dive except as follows:

1. Diving officer/helmsman sets Full Ahead instead of Great Ahead at outset.

2. Diving officer/helmsman establishes initial down angle of 8-15 deg, and once past 20 meters, increases down angle to 15-30 deg to “drive” the boat to depth at Full Ahead.

3. Commander may want a 90-deg course change once below the surface, in which case the dive officer/helmsman will initiate this on his command (or automatically if desired by commander).

Depth Changes

1. Normally done at Half Ahead (Great Ahead if emergency). Diving officer/helmsman reports “Boat rising/falling/steady” according to situation.

2. If coming up from depth, perform a sound check at 20 meters, then a scope check at periscope depth prior to surfacing.

[derstosstrupp]

Surfacing (from Periscope Depth)

C – Orders “Prepare to surface” (Commander makes ready to climb ladder followed by Navigator, Radioman to negative tank controls, Diving Officer/Helmsman at diving station)

N – Reports “Bridge watch ready”.

C – Orders “Both Great Ahead” and “Surface!”

D/H – Sets fwd planes hard up, aft up 5 deg. When boat rises, reports “Boat rising” and orders “Flood negative”. Reports depth change: “14….13….12….”

R – Floods negative tank, makes ready to blow ballast.

C – Orders “Blow” and climbs ladder to hatch.

N – Follows commander up ladder, notes current position on chart.

R – Blows ballast, awaits order from commander to stop blowing, verifies negative flood valve shut.

D/H – Reports “Hatch coming free” when at 7.5 meters.

C – Climbs topside, orders “Switch to diesels”. (Just commander goes topside in case need to dive again quickly)

D/H – Switches to diesels and back to Great Ahead.

D/H – Reports “boat is out” when fully surfaced.

C – Orders “stop blowing” and quickly scans horizon to ensure all clear.

R – Stops blowing ballast, stands by. (This ensures that if not all clear, boat can get back down in a hurry)

C – If all clear, orders “Blow with diesel”. (This is a historical procedure not replicated in the game, but in WP it can serve as a signal to finish blowing as well as a reminder to start the diesel if not yet started)

N - Navigator remains in tower.

R – Finishes blowing ballast, reports “All have blown” when done.

D/H – Asks Commander if bilge may be pumped. Starts compressor and, if ordered, bilge pump.

C – “Secure from diving stations” (All are already in correct positions except Radioman who returns to post on bridge), orders course and speed as desired.

D/H – Unless told by commander otherwise, sets telegraph to charge batteries.

D/H – Monitors compressed air level and stops compressor when done.