Test (Routine) Dive
C – “Prepare to dive” – Navigator/Radioman immediately slides down ladder from tower, goes to Echolot for quick sounding then to aft ballast vents. Commander goes below and closes hatch.
D/H – Switches to electrics, then Great Ahead, mans fwd ballast vents, reports “Forward vents ready”.
N/R – Reports depth under keel, then at aft vents: “aft vents ready, all vents ready”. Marks current position on map.
C – Shuts tower hatch, orders “Flood!”
D/H – Opens fwd ballast vents, reports “Forward open”. Sets fwd planes hard down, aft down 5.
N/R – After about 5 seconds, opens aft ballast vents, reports “Aft open, vents are open”. Mans negative.
At 8-15 meters depth:
D/H – Orders “Blow negative”.
N/R – Blows negative, reports when done “Negative blown”. Mans aft vents.
C – Orders “Go to x meters”.
D/H – Reports depth in 10-meter increments, having established a down angle of 5-8 deg. Levels off 2-5 meters below ordered depth, sets planes fwd up 10, aft up 15 and approaches ordered depth from below.
At desired depth:
D/H - Reports “Boat is balanced”.
C – Orders “Close vents”.
D/H – Closes fwd vents, reports “Forward closed”.
N/R – Closes aft vents, reports “Aft closed, all vents closed”, inspects for leaks, reports “No leaks in the boat”, reports compressed air level. Mans hydrophone/TDC as required.
C – Orders course and speed (usually slow ahead, half ahead for any depth changes)
D/H – Reports battery level.
N/R – Reports sound contacts.
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