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cmdrk · 09-21-06, 03:59 PM

Source:
http://www.history.navy.mil/library/...onipubno32.htm

O. N. I. Publication No. 32
[formerly] For Official Use Only [Declassified OP09BH 17 Aug 72]

GERMAN
SUBMARINES
IN
Question and Answer

NAVY DEPARTMENT
OFFICE OF NAVAL INTELLIGENCE,
JUNE, 1918

WASHINGTON
GOVERNMENT PRINTING OFFICE
1918

43. Can submarines remain stopped when submerged, without lying on the bottom?

A very well trimmed boat may do so for about 5 minutes at a time by juggling with her periscope. For longer periods it is only possible in a few localities where layers of different density. occur in the water, e. g., in the Baltic, Cattegat, and Sea of Marmora, where occasionally a boat may lie submerged almost indefinitely1 with all machinery stopped, resting on a layer of salt water.

1 Two German submarines, sent at outbreak of war to watch the southern exits from the sound and Great Belt, succeeded in thus lying submerged, with their motors stopped most of the time, for about 23 hours out of the 24, on 7 consecutive days.

09-21-06, 03:59 PM	#1
cmdrk Planesman Join Date: Mar 2002 Posts: 184 Downloads: 3 Uploads: 0	Can subs hover? Source: http://www.history.navy.mil/library/...onipubno32.htm O. N. I. Publication No. 32 [formerly] For Official Use Only [Declassified OP09BH 17 Aug 72] GERMAN SUBMARINES IN Question and Answer NAVY DEPARTMENT OFFICE OF NAVAL INTELLIGENCE, JUNE, 1918 WASHINGTON GOVERNMENT PRINTING OFFICE 1918 43. Can submarines remain stopped when submerged, without lying on the bottom? A very well trimmed boat may do so for about 5 minutes at a time by juggling with her periscope. For longer periods it is only possible in a few localities where layers of different density. occur in the water, e. g., in the Baltic, Cattegat, and Sea of Marmora, where occasionally a boat may lie submerged almost indefinitely1 with all machinery stopped, resting on a layer of salt water. 1 Two German submarines, sent at outbreak of war to watch the southern exits from the sound and Great Belt, succeeded in thus lying submerged, with their motors stopped most of the time, for about 23 hours out of the 24, on 7 consecutive days.