Why do American subs have a less test depth in comparison to a German UBoat?

[les green01]

in the Das Boot book i got they got everything in feet instead of meters in the movie they use meters so i'm thinking they didnt convert the feet to meters in the 700ft part also in the movie one part they doing a sound check at 30 meters he orders scope dept then starts using the oservation scope

[A Soviet Fanboi]

Originally Posted by ETR3(SS)

As Bubblehead has stated (and I'll expand on) diesel boats most certainly can rest on the sea bottom. Most nuc boats cannot, or could not, rest on the bottom due to Main Seawater and Auxiliary Seawater suction and discharge. The exceptions I believe were SSN-575 Seawolf, SSGN-587 Halibut, and SSN-683 Parche. With no reactor plant to keep running, there's no need for a MSW/ASW system or to take a suction from or discharge to the sea while submerged in a diesel boat.

What's the difference between Main Sea water suction and discharge, and Natural Circulation of sea water in Nuclear submarines?

[mikesn9]

Originally Posted by A Soviet Fanboi

What's the difference between Main Sea water suction and discharge, and Natural Circulation of sea water in Nuclear submarines?

Seawater is the start of the cooling "system" it cools things that cool things, etc till the reactor is cooled. It takes Pumps to move the water fast enough.

If the boat uses natural circulation the cool the reactor: boy are they in trouble.

they have lost most of the functions of the engineering spaces.
Time to bend over and kiss your arse goodbye.


Former reactor operator here. If you didn't sink, Naval Reactors would have your arse anyway.

[A Soviet Fanboi]

Originally Posted by mikesn9

Seawater is the start of the cooling "system" it cools things that cool things, etc till the reactor is cooled. It takes Pumps to move the water fast enough.

If the boat uses natural circulation the cool the reactor: boy are they in trouble.

they have lost most of the functions of the engineering spaces.
Time to bend over and kiss your arse goodbye.


Former reactor operator here. If you didn't sink, Naval Reactors would have your arse anyway.

Lmao, I read in Wikipedia that the recent Yasen class SSGN of Russia uses Natural Circulation of water in order to cool it's reactors. It also stated that this made the submarine much more quieter.

[Red Devil]

Originally Posted by KaleunMarco

700 m is 2296.588 feet.
no WWII sub from any nation could survive a dive to 2296 feet.
that's Hollywood.

you are probably right, maybe it was FEET, big difference. Itys been a while since I watch it. Danke much

[ETR3(SS)]

Originally Posted by A Soviet Fanboi

What's the difference between Main Sea water suction and discharge, and Natural Circulation of sea water in Nuclear submarines?

Main Seawater is the cooling source for the steam side of the plant. It runs through the condensers (located under the Main Engines and Turbine Generators) cooling the steam and turning it back into liquid water. So MSW Suction is the inlet to the system drawing seawater in, whereas MSW discharge is the outlet.

Originally Posted by mikesn9

Seawater is the start of the cooling "system" it cools things that cool things, etc till the reactor is cooled. It takes Pumps to move the water fast enough.

If the boat uses natural circulation the cool the reactor: boy are they in trouble.

they have lost most of the functions of the engineering spaces.
Time to bend over and kiss your arse goodbye.


Former reactor operator here. If you didn't sink, Naval Reactors would have your arse anyway.

The S8G was designed with natural circulation in mind, that was installed on the Ohio's. There were a couple proof of concept builds before that though, I believe the Narwhal had a nat circ plant with MSW scoops (S5G). I'm not a nuc, but I understand more than the average coner.