Quote:
Originally Posted by Aktungbby
Also: and you can time it yourself; staying 'heavy' at 5-6 meters-will shorten your crash dive times by (reportedly) 50 seconds. It will possibly slow your vessel down but better slow than sunk! Works 4 me in SHV, SHII and AoD.
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That is definately not permitted according to the rule book! Us new guys would be better off sunk, than being dragged over the coals for not following regulations!
Quote:
Diving Regulations
for U-boats
(U-boat Div.Reg.)
Berlin 1943
Oberkommando der Kriegsmarine
B. Pre-flooding forward ballast tanks while crash diving
141. Preflooding of the forward or forward and center ballast tanks is prohibited for boats in the homeland.
142. Proceeding with preflooded ballast tanks is prohibited because cruising speed and stability are thereby reduced. The boat can settle and undercut with vents not completely shut, especially at night, without this being noticed by the bridge-personnel in time. The time gain made possible by preflooding stands in no relation to the danger to the boat associated with it.
143. If the order to crash dive is given again while blowing, no premature opening of the forward vents may take place in this condition.
144. The diving times of medium boats are so favorable - in general they are under half a minute - that in general preflooding is not necessary. It is left to the judgment of the Commander whether boats at the front open the vent of the ballast tank Five on crash diving without further notice. This may depend on the weather conditions, the state of training of the boat and other special circumstances.
However, the Commander must ensure that there is always clear instruction about whether it should be preflooded on crash diving or not.
145. In large boats (type IX C, IX D, X B and XIV) the pre flooding of the forward ballast tank or the forward and center diving tanks on crash diving is left to the judgment of the Commander.
In well run front boats it is customary and there is no objection to it.
146. Free.
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