Blowing ballasttanksquestion

Frederf · 07-31-07, 10:33 PM

In game I know (at least from SH3) that pressing "Emergency surface" once would activate the compressed air reserve to shoot you upward. Pressing the command twice actually increased the effectiveness/speed (3rd time? Think 2nd press was the maximum rate).

As far as gameplay goes even from 400' and double-emergency surface there was always 70% or so compressed air left in the tanks and thus there was never any real concern of running out.

For real WWII subs wasn't boyancy changes at depth cause to use some of this compressed air. Was running out of compressed air ever a real concern?

It seems weird to give us this guage when 99.999999% of the time it's of no concern.

Shirkon · 08-01-07, 12:49 AM

There were additional fuel tanks between the fuel/ballast tanks and the diesel itself. First there are the Normal Fuel Oil tanks (NFO), 4 of them. Then there is the Fuel Oil Collecting tank (FOC) which acts as a settling tank which ensures that the fuel oil and water are separated. Lastly there is the Clean Fuel Oil tank (CFO). Fuel is pumped from the ballast tanks, through a filter and into the NFO tanks, from there it goes to the FOC tank and finally to the CFO tank before going to the engines.

07-31-07, 10:33 PM	#1
Frederf Seasoned Skipper Join Date: Apr 2005 Posts: 665 Downloads: 79 Uploads: 1	In game I know (at least from SH3) that pressing "Emergency surface" once would activate the compressed air reserve to shoot you upward. Pressing the command twice actually increased the effectiveness/speed (3rd time? Think 2nd press was the maximum rate). As far as gameplay goes even from 400' and double-emergency surface there was always 70% or so compressed air left in the tanks and thus there was never any real concern of running out. For real WWII subs wasn't boyancy changes at depth cause to use some of this compressed air. Was running out of compressed air ever a real concern? It seems weird to give us this guage when 99.999999% of the time it's of no concern.

08-01-07, 12:49 AM	#2
Shirkon Swabbie Join Date: Jul 2007 Posts: 7 Downloads: 54 Uploads: 0	There were additional fuel tanks between the fuel/ballast tanks and the diesel itself. First there are the Normal Fuel Oil tanks (NFO), 4 of them. Then there is the Fuel Oil Collecting tank (FOC) which acts as a settling tank which ensures that the fuel oil and water are separated. Lastly there is the Clean Fuel Oil tank (CFO). Fuel is pumped from the ballast tanks, through a filter and into the NFO tanks, from there it goes to the FOC tank and finally to the CFO tank before going to the engines.