Blowing negativ tank loud?

Gummi · 03-21-19, 04:22 AM

Hi. The laterst game im joining The mayority is using negativ tank when diving from surface to periscope deaph. This is not an emergency dive, just normal operation.

My point is that blowing that negativ tank submerge must be a strange och and load sound for any destroyers listen out there. So i prefer speed and dive planes only. But then crew yell att me to use negativ tank.
if its a crashdive I use it. But then we allready spotted so more sounds doesnt matter

My Question is.
does destroyers pick up sounds then you blow negativ tank
why use negativ tank IF you not spotted, only consume compress air

Cyborg322 · 03-21-19, 06:14 AM

Assuming the negative tank is empty you dont need to flood it just use dive planes and main ballast when you start a mission the negative tank is flooded it could be that if I understand your point

Gummi · 03-21-19, 07:04 AM

NO.. All The time during mission.. When cruising at surface The tank is full and after depth achive they blow it to maintain depth, then after surfande they fill negativ tank again and so on..

I want too keep it emty at surface, and only fill it when we crashdive.
but allmost every crew i join tell me when im dive officer i must fill negativ tank before we go to periscope depth,

Cyborg322 · 03-21-19, 07:23 AM

I would do it your way it makes it easier to get to scope depth unless there is an emergency not sure if noise is an issue blowing ballast this is a great video worth watching https://www.twitch.tv/videos/396680215

Pisces · 03-21-19, 10:00 AM

Caveat: I don't have the game yet. So I haven't tried this in practice yet.

I think it is proper to keep the negative tank filled when on the surface, and as such I think the default state of the tank is warranted. As far as I learned from comments here and in the discord channels the boat has positive buoyancy when the negative is filled and the ballast tanks are empty. So you can stay surfaced, or slowly rise, with the negative tank filled and the ballast tanks emptied and neutral dive-planes.

When somebody calls out the alarm to crash-dive you don't want to wait until the negative tank is filled. You don't have the time. You want as little positive buoyancy as possible at that point. So it is better to have it filled as a precaution and you only need to flood the ballast tanks to go down quickly.

When ever you are submerged you can empty the negative at an appropriate dept to arrest your dive rate and limit the air pressure use to empty the negative tank. If you want to go deep quickly you can keep the negative tank filled longer, but that will have consequences as to how much air pressure that requires to empty at deeper depth. It's a choice. I don't know if you can arrest the dive with filled ballast and negative tanks on dive-planes and speed alone. Either way, sooner or later you want to go slow, so the negative tank needs to be emptied to be neutrally buoyant.

In or after non-crash dive situations the enemy warships are less likely to be near the boat. So I don't think emptying the negative tank making noise is going to alert anyone. Maybe emptying it slowly produces less noise and you can avoid detection if it does make you detectable. As I said, I have no gameplay experience to substantiate that yet.

Cyborg322 · 03-21-19, 11:20 AM

Been testing different ways. Doing it by the book as you describe seems the best method its also in the guide that way. Also experimented with blowing main ballast too you can get away with only blowing a small amount out to stay surfaced but I would not recommend it

03-21-19, 04:22 AM	#1
Gummi Watch Join Date: Dec 2013 Posts: 18 Downloads: 110 Uploads: 0	Blowing negativ tank loud? Hi. The laterst game im joining The mayority is using negativ tank when diving from surface to periscope deaph. This is not an emergency dive, just normal operation. My point is that blowing that negativ tank submerge must be a strange och and load sound for any destroyers listen out there. So i prefer speed and dive planes only. But then crew yell att me to use negativ tank. if its a crashdive I use it. But then we allready spotted so more sounds doesnt matter My Question is. does destroyers pick up sounds then you blow negativ tank why use negativ tank IF you not spotted, only consume compress air

03-21-19, 06:14 AM	#2
Cyborg322 Scurvy Dog of the Deep Join Date: Dec 2009 Location: Manchester England Posts: 1,125 Downloads: 390 Uploads: 0	Assuming the negative tank is empty you dont need to flood it just use dive planes and main ballast when you start a mission the negative tank is flooded it could be that if I understand your point __________________

03-21-19, 07:23 AM	#4
Cyborg322 Scurvy Dog of the Deep Join Date: Dec 2009 Location: Manchester England Posts: 1,125 Downloads: 390 Uploads: 0	I would do it your way it makes it easier to get to scope depth unless there is an emergency not sure if noise is an issue blowing ballast this is a great video worth watching https://www.twitch.tv/videos/396680215 __________________

03-21-19, 11:20 AM	#6
Cyborg322 Scurvy Dog of the Deep Join Date: Dec 2009 Location: Manchester England Posts: 1,125 Downloads: 390 Uploads: 0	Been testing different ways. Doing it by the book as you describe seems the best method its also in the guide that way. Also experimented with blowing main ballast too you can get away with only blowing a small amount out to stay surfaced but I would not recommend it __________________

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03-21-19, 07:04 AM	#3
Gummi Watch Join Date: Dec 2013 Posts: 18 Downloads: 110 Uploads: 0	NO.. All The time during mission.. When cruising at surface The tank is full and after depth achive they blow it to maintain depth, then after surfande they fill negativ tank again and so on.. I want too keep it emty at surface, and only fill it when we crashdive. but allmost every crew i join tell me when im dive officer i must fill negativ tank before we go to periscope depth,

03-21-19, 10:00 AM	#5
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	Caveat: I don't have the game yet. So I haven't tried this in practice yet. I think it is proper to keep the negative tank filled when on the surface, and as such I think the default state of the tank is warranted. As far as I learned from comments here and in the discord channels the boat has positive buoyancy when the negative is filled and the ballast tanks are empty. So you can stay surfaced, or slowly rise, with the negative tank filled and the ballast tanks emptied and neutral dive-planes. When somebody calls out the alarm to crash-dive you don't want to wait until the negative tank is filled. You don't have the time. You want as little positive buoyancy as possible at that point. So it is better to have it filled as a precaution and you only need to flood the ballast tanks to go down quickly. When ever you are submerged you can empty the negative at an appropriate dept to arrest your dive rate and limit the air pressure use to empty the negative tank. If you want to go deep quickly you can keep the negative tank filled longer, but that will have consequences as to how much air pressure that requires to empty at deeper depth. It's a choice. I don't know if you can arrest the dive with filled ballast and negative tanks on dive-planes and speed alone. Either way, sooner or later you want to go slow, so the negative tank needs to be emptied to be neutrally buoyant. In or after non-crash dive situations the enemy warships are less likely to be near the boat. So I don't think emptying the negative tank making noise is going to alert anyone. Maybe emptying it slowly produces less noise and you can avoid detection if it does make you detectable. As I said, I have no gameplay experience to substantiate that yet.