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.
|