New Japanese sub design

[Admiral Rockwell Tory]

WW2 subs were submersible torpedo boats. They were optimized to run on the surface. U Boats typically attacked on the surface to increase their mobility.

Yeah, I know.

 

[Leo123]

Lithium powered sub half the size of a nuke sub.. Good to see our Allie producing top of the line equipment. US needs to get it naval shipbuilding in order. No more of building something before the design is finished giving us white elephants

Nuclear subs typically patrol for 70 to 120 days submerged.

 

[westwall]

I'm sorry, but you are just too ignorant to be believed. Running with the snorkel and diesels on makes your passive sonar absolutely ******* useless. Plus, you can be heard sometimes a hundred miles away.

Aircraft don't find subs with radar most of the time anyway. You just need to quietly dismiss yourself.

I guess you've never heard of turning everything off from time to time to take a listen. The aircraft use their radars to spot the snorkel.

Conventional subs are very quiet, so no, they can't be heard 100 miles away.

You must have failed that 6 week ASW class.

 

[Zavulon]

I guess you've never heard of turning everything off from time to time to take a listen. The aircraft use their radars to spot the snorkel.

Conventional subs are very quiet, so no, they can't be heard 100 miles away.

You must have failed that 6 week ASW class.

Conventional subs are quite only when they are at electric batteries. Diesel is quite noisy thing.

 

[Admiral Rockwell Tory]

I guess you've never heard of turning everything off from time to time to take a listen. The aircraft use their radars to spot the snorkel.

Conventional subs are very quiet, so no, they can't be heard 100 miles away.

You must have failed that 6 week ASW class.

Diesels are noisy, dumbass!

 

[westwall]

Diesels are noisy, dumbass!

Not really. It is quite apparent that you are not conversant with modern technology. And, like I said. They aren't run continuously on the surface. They make frequent stops to listen.

Makes them slower overall, than a nuke boat, for sure. But once underwater they are much quieter than a nuke. No turbine noises to mask.

 

[WorldWatcher]

I guess you've never heard of turning everything off from time to time to take a listen. The aircraft use their radars to spot the snorkel.

Conventional subs are very quiet, so no, they can't be heard 100 miles away.

You must have failed that 6 week ASW class.

Conventional subs operate in two different modes:

• Diesel Power - either fully surfaced or snorkel,
• Electric - battery, normally submerged

A conventional sub surfaced or snorkeling and operating its diesel engine is not very quiet and can be detected at long range. There is a difference between modes.

WW

 

[westwall]

Conventional subs operate in two different modes:

• Diesel Power - either fully surfaced or snorkel,
• Electric - battery, normally submerged

A conventional sub surfaced or snorkeling and operating its diesel engine is not very quiet and can be detected at long range. There is a difference between modes.

WW

Duh, I know very well the two modes. You people seem to think that the modern diesels are the same as that one in Down Periscope.

They aren't.

You also are ignoring tactics. Sub captains don't just willy nilly run on the surface. They listen for hours so they have the entire region around them mapped out before they ever surface for venting and recharging.

 

[Admiral Rockwell Tory]

Not really. It is quite apparent that you are not conversant with modern technology. And, like I said. They aren't run continuously on the surface. They make frequent stops to listen.

Makes them slower overall, than a nuke boat, for sure. But once underwater they are much quieter than a nuke. No turbine noises to mask.

When they run the diesels they are susceptible to passive sonar, especially rally SOSUS and towed array sonars. You dont know shit except what you Google.

 

[AZrailwhale]

I guess you've never heard of turning everything off from time to time to take a listen. The aircraft use their radars to spot the snorkel.

Conventional subs are very quiet, so no, they can't be heard 100 miles away.

You must have failed that 6 week ASW class.

Conventional subs running on diesels are VERY noisy and they have to charge their batteries every forty-eight hours AT BEST. Diesel-electric subs running on batteries have a range of between one and two hundred miles depending on how healthy their batteries are.

 

[westwall]

When they run the diesels they are susceptible to passive sonar, especially rally SOSUS and towed array sonars. You dont know shit except what you Google.

No shit. I wonder how that sonar mapping of the seas around the sub affect the actions of the subs captain

 

[westwall]

Conventional subs running on diesels are VERY noisy and they have to charge their batteries every forty-eight hours AT BEST. Diesel-electric subs running on batteries have a range of between one and two hundred miles depending on how healthy their batteries are.

Not any longer. You're a bit out of date on the current submarine technology.

 

[Admiral Rockwell Tory]

No shit. I wonder how that sonar mapping of the seas around the sub affect the actions of the subs captain

WTF do you mean "sonar mapping"? Never heard of it. Did you Google that or make it up?

 

[westwall]

WTF do you mean "sonar mapping"? Never heard of it. Did you Google that or make it up?

Sheesh, they sure didn't teach you much at ASW school. Sure you didn't sleep through the classes?

"Sonar contact, surface vessel, bearing 068, range 36 miles, speed 8 knots heading 235"

And you plot that on your chart, and draw a line to show the vessels course, and then put little hash marks at where it is estimated it will be in the future.

If it's a large ship they can usually identify it based on the sounds of its PowerPoint.

And you do that for ever vessel that is along your course. That way you can stay below their horizon.

Simple.

 

[Admiral Rockwell Tory]

Sheesh, they sure didn't teach you much at ASW school. Sure you didn't sleep through the classes?

"Sonar contact, surface vessel, bearing 068, range 36 miles, speed 8 knots heading 235"

And you plot that on your chart, and draw a line to show the vessels course, and then put little hash marks at where it is estimated it will be in the future.

If it's a large ship they can usually identify it based on the sounds of its PowerPoint.

And you do that for ever vessel that is along your course. That way you can stay below their horizon.

Simple.

You watch too many TV shows and movies. How do you determine course, speed, and range with passive sonar? Tell me because I know, and you dont. They never show it.

 

[there4eyeM]

Interesting tech for possible private and public applications. Travel by submersible has many attractive characteristics.

 

[westwall]

You watch too many TV shows and movies. How do you determine course, speed, and range with passive sonar? Tell me because I know, and you dont. They never show it.

Ummmm, you take multiple bearing plots, place them on your big ole chart, and over the course of an hour or so you use this thing called "math" to determine those facts.

 

[Admiral Rockwell Tory]

Ummmm, you take multiple bearing plots, place them on your big ole chart, and over the course of an hour or so you use this thing called "math" to determine those facts.

Good luck with that! Not how it works. You watch too many movies.

******* amateur.

 

[westwall]

Good luck with that! Not how it works. You watch too many movies.

******* amateur.

Actually that's exactly how it works. I just didn't bother to use the terminology you no doubt looked up on google.

 

[Admiral Rockwell Tory]

Actually that's exactly how it works. I just didn't bother to use the terminology you no doubt looked up on google.

So, tell me what a sonar convergence zone looks like obtained by a towed array sonar?