Learning

Pisces · 04-03-19, 09:00 AM

You are starting to sink immediately because after you flood the main ballast tanks you have negative buoyancy as the negative tank is also filled. Once you are submerged you should empty the negative. As soon as possible, as it takes quite a bit of air once you get deeper. But not entirely empty it! To get properly neutrally buoyant at periscope depth you should leave 0.05 m^3 (or 1 halve tick) in the negative tank.

At deeper levels you may need to empty it totally and empty the main ballast tanks also a bit to become lighter and compensate for your more compressed volume. How much I don't know yet.

con20or · 04-03-19, 09:22 AM

Thats the job - submerged nicely now

Captain_AJ · 04-03-19, 08:08 PM

slipped below the surface without opening main ballast tanks .. all I did was fill the water tank to full and she started diving,, main ballast tanks? anyone try this?

U56 · 04-04-19, 09:04 AM

Quote:

Originally Posted by Captain_AJ

slipped below the surface without opening main ballast tanks .. all I did was fill the water tank to full and she started diving,, main ballast tanks? anyone try this?

Sorry AJ not sure exactly what you did here. You cannot fill the main ballast tanks without opening the valves, and the negative tank starts in the game already full. Rgds.

Captain_AJ · 04-04-19, 05:04 PM

let me explain .. I opened the tank where the water became the ballast and she went into a dive without opening the main ballast tanks, clear enough of what was said? ill do screenshots lafiin

Pisces · 04-05-19, 10:31 AM

I don't think it is clear yet. Atleast not to me.

It might help if you explain in which location you do something.

Above the hatch to the radio/hydrophone is a wheel to open and close the forward ballast vents. To let in or block water from going in.

Same at the back bulkhead near the compressor is the wheel to open and close the aft ballast vents. To let in or block water from going in.

Just behind the diving station are 2 places with wheel valves:

The front with 3 dial and a single wheel. 2 dials showing the volume (flooding level) of the fwd and aft ballast tanks. Both show an independent volume of around 75 cubic meter. And 1 dial showing the amount of compressed air left in the compressor tank. The wheel is used to blow these tanks empty. It cannot fill it. If the ballast vents are open then you waste compressed air by turning this wheel.

Behind that is the negative tank station. It has 2 dials: a water volume gauge and a repeat of the air left in the compressor tank. It has 2 wheels. One with which you can express this negative tank with air. The other to fill it with water. It has only a volume of around 4 cubic meters. (or 4.5 cubic meters, can't remember exactly) It is used to provide negative buoyancy against the neutral buoyancy you would have when the main ballast tanks are full of water.

[edit] And there is the bilge pump with a dial showing volume in the bilge tanks. These should only fill when you are making water by damage or seeping water coming in at deep depths.

04-03-19, 09:22 AM	#2
con20or Lieutenant Join Date: Mar 2006 Location: Ireland Posts: 269 Downloads: 37 Uploads: 0	Thats the job - submerged nicely now __________________ QA Lead on Scourge of War - http://www.scourgeofwar.com/index.shtml (98% rating on Armchair general) - http://www.armchairgeneral.com/scour...ame-review.htm SoW Waterloo Announced for 2015!!

04-03-19, 08:08 PM	#3
Captain_AJ Crusty Join Date: Jun 2005 Location: USA Posts: 649 Downloads: 334 Uploads: 0	slipped below the surface without opening main ballast tanks .. all I did was fill the water tank to full and she started diving,, main ballast tanks? anyone try this? __________________ Captain AJ

04-04-19, 05:04 PM	#5
Captain_AJ Crusty Join Date: Jun 2005 Location: USA Posts: 649 Downloads: 334 Uploads: 0	let me explain .. I opened the tank where the water became the ballast and she went into a dive without opening the main ballast tanks, clear enough of what was said? ill do screenshots lafiin __________________ Captain AJ

04-03-19, 09:00 AM	#1
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	You are starting to sink immediately because after you flood the main ballast tanks you have negative buoyancy as the negative tank is also filled. Once you are submerged you should empty the negative. As soon as possible, as it takes quite a bit of air once you get deeper. But not entirely empty it! To get properly neutrally buoyant at periscope depth you should leave 0.05 m^3 (or 1 halve tick) in the negative tank. At deeper levels you may need to empty it totally and empty the main ballast tanks also a bit to become lighter and compensate for your more compressed volume. How much I don't know yet.

04-05-19, 10:31 AM	#6
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	I don't think it is clear yet. Atleast not to me. It might help if you explain in which location you do something. Above the hatch to the radio/hydrophone is a wheel to open and close the forward ballast vents. To let in or block water from going in. Same at the back bulkhead near the compressor is the wheel to open and close the aft ballast vents. To let in or block water from going in. Just behind the diving station are 2 places with wheel valves: The front with 3 dial and a single wheel. 2 dials showing the volume (flooding level) of the fwd and aft ballast tanks. Both show an independent volume of around 75 cubic meter. And 1 dial showing the amount of compressed air left in the compressor tank. The wheel is used to blow these tanks empty. It cannot fill it. If the ballast vents are open then you waste compressed air by turning this wheel. Behind that is the negative tank station. It has 2 dials: a water volume gauge and a repeat of the air left in the compressor tank. It has 2 wheels. One with which you can express this negative tank with air. The other to fill it with water. It has only a volume of around 4 cubic meters. (or 4.5 cubic meters, can't remember exactly) It is used to provide negative buoyancy against the neutral buoyancy you would have when the main ballast tanks are full of water. [edit] And there is the bilge pump with a dial showing volume in the bilge tanks. These should only fill when you are making water by damage or seeping water coming in at deep depths.