Submarines

[m1ashooter]

Since subs are the silent service you will not find much about their capabilities and what they can see or not see.

[Allen]

I do recall you posting that in the past,

can you board the Sub?

the one in SC is moored, but bottomed out (not sure if on concrete or just the mud) and you can enter and go thru it,

Yes on the sub and battleship.

[Merc]

Few of our secrets are as closely guarded as are the capabilities of a modern sub or carrier and their ability to detect and pursue a target or evade an attacker.

[kj47]

Back in 1992 wife and I visited the USS Alabama and the Drum. Pretty cramped in the sub.

[Art]

Lyman:

I don't know if you're a fisherman but if you go to Sea Wolf Park to see the Cavalla the fishing on the rocks on the north east corner of the park is about as good as you'll find without a boat.

[Allen]

Back in 1992 wife and I visited the USS Alabama and the Drum. Pretty cramped in the sub.

Yep, not a lot of room. Only small groups at a time can enter. From the pictures it looks like an entrance has been cut out now. Back when I went on it we had to enter through the hatch and climb down the conning tower ladder. Back then it was in the water too and not elevated on dry land like now. A lot of the small rooms set up for display are roped off too making for less walking space on board.

https://images.search.yahoo.com/search/images;_ylt=AwrExl_FxqFdQQoAmjGJzbkF;_ylu=X3oDMTBsZ29xY3ZzBHNlYwNzZWFyY2gEc2xrA2J1dHRvbg--;_ylc=X1MDOTYwNjI4NTcEX3IDMgRhY3RuA2NsawRjc3JjcHZpZANYVTllYkRFd0xqSUk5dS5CWGFIRS5RRTFOelV1TVFBQUFBRERRMHB3BGZyA3lmcC10LXMEZnIyA3NhLWdwBGdwcmlkA1hNYkN3TXQ2UmdpcXJBSDFyVEdQVEEEbl9zdWdnAzAEb3JpZ2luA2ltYWdlcy5zZWFyY2gueWFob28uY29tBHBvcwMwBHBxc3RyAwRwcXN0cmwDBHFzdHJsAzMxBHF1ZXJ5A3VzcyUyMGRydW0lMjBzdWJtYXJpbmUlMjBpbnNpZGUEdF9zdG1wAzE1NzA4ODMzMjk-?p=uss+drum+submarine+inside&fr=yfp-t-s&fr2=sb-top-images.search&ei=UTF-8&n=60&x=wrt&guccounter=1&guce_referrer=aHR0cHM6Ly9pbWFnZXMuc2VhcmNoLnlhaG9vLmNvbS9zZWFyY2gvaW1hZ2VzO195bHQ9QTBnZUpHckJ4cUZkV2w0QXVscFhOeW9BO195bHU9WDNvRE1URTBNM05sT1RWdEJHTnZiRzhEWW1ZeEJIQnZjd014QkhaMGFXUURRamczTURaZk1RUnpaV01EY0dsMmN3LS0_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&guce_referrer_sig=AQAAACmG8rbwMLfXYjapm_P-n-GLk13ObaA1e_YM10Y2QoJtIsnxOnYt0IfBO1td4Qgm_eKKPwNsArJKNb2rheCPMR8NnJclxpVCg-coAj8WX6aUls3u4zHTfAQus-bYAvlWtIJaihI4p0coXemsP0ED55Cv3bZEs0_fJRn4jfwfjZK-#id=34&iurl=https%3A%2F%2Fwww.ussalabama.com%2Fwp-content%2Fuploads%2F2017%2F02%2F13938495_10154580340663128_7494250571590764614_n.png&action=close

[JOHN COOK]

Art, you have every right to correct me any time and I want be offended. You stated that they don't have a heat signature and the sure fire method is to ping during a search. I'll post this information and have no further post on this subject. It is very clear to me that a heat pattern is definitely left during the generating steam and dispersing hot or warm water to the surface. FWIW. This information was copied and pasted , not my words..

john in SC

The main difference between conventional submarines and nuclear submarines is the power generation system. Nuclear submarines employ nuclear reactors for this task. They either generate electricity that powers electric motors connected to the propeller shaft or rely on the reactor heat to produce steam that drives steam turbines ( nuclear marine propulsion). Reactors used in submarines typically use highly enriched fuel (often greater than 20%) to enable them to deliver a large amount of power from a smaller reactor and operate longer between refuelings – which are difficult due to the reactor's position within the submarine's pressure hull.

The nuclear reactor also supplies power to the submarine's other subsystems, such as for maintenance of air quality, fresh water production by distilling salt water from the ocean, temperature regulation, etc. All naval nuclear reactors currently in use are operated with diesel generators as a backup power system. These engines are able to provide emergency electrical power for reactor decay heat removal, as well as enough electric power to supply an emergency propulsion mechanism. Submarines may carry nuclear fuel for up to 30 years of operation. The only resource that limits the time underwater is the food supply for the crew and maintenance of the vessel.

The stealth technology/B[B] weakness[] of nuclear submarines is the need to cool the reactor even when the submarine is not moving; about 70% of the reactor output heat is dissipated into the sea water. This leaves a "thermal wake", a plume of warm water of lower density which ascends to the sea surface and creates a "thermal scar" that is observable by thermal imaging systems, e.g., FLIR.[16] Another problem is that the reactor is always running, creating steam noise, which can be heard on SONAR, and the reactor pump (used to circulate reactor coolant), also creates noise, as opposed to a conventional submarine, which can move about on almost silent electric motors.

[Art]

Art, you have every right to correct me any time and I want be offended. You stated that they don't have a heat signature and the sure fire method is to ping during a search. I'll post this information and have no further post on this subject. It is very clear to me that a heat pattern is definitely left during the generating steam and dispersing hot or warm water to the surface. FWIW. This information was copied and pasted , not my words..

john in SC

The main difference between conventional submarines and nuclear submarines is the power generation system. Nuclear submarines employ nuclear reactors for this task. They either generate electricity that powers electric motors connected to the propeller shaft or rely on the reactor heat to produce steam that drives steam turbines ( nuclear marine propulsion). Reactors used in submarines typically use highly enriched fuel (often greater than 20%) to enable them to deliver a large amount of power from a smaller reactor and operate longer between refuelings – which are difficult due to the reactor's position within the submarine's pressure hull.

The nuclear reactor also supplies power to the submarine's other subsystems, such as for maintenance of air quality, fresh water production by distilling salt water from the ocean, temperature regulation, etc. All naval nuclear reactors currently in use are operated with diesel generators as a backup power system. These engines are able to provide emergency electrical power for reactor decay heat removal, as well as enough electric power to supply an emergency propulsion mechanism. Submarines may carry nuclear fuel for up to 30 years of operation. The only resource that limits the time underwater is the food supply for the crew and maintenance of the vessel.

The stealth technology/B[B] weakness[] of nuclear submarines is the need to cool the reactor even when the submarine is not moving; about 70% of the reactor output heat is dissipated into the sea water. This leaves a "thermal wake", a plume of warm water of lower density which ascends to the sea surface and creates a "thermal scar" that is observable by thermal imaging systems, e.g., FLIR.[16] Another problem is that the reactor is always running, creating steam noise, which can be heard on SONAR, and the reactor pump (used to circulate reactor coolant), also creates noise, as opposed to a conventional submarine, which can move about on almost silent electric motors.

I can't see that we really have a disagreement. Perhaps I did not make my self clear previously so if that was the case I apologize. My only point was that diesel electric boats have been improved substantially over time and still have a legitimate function.

[jon_norstog]

What Art says. the new diesel-electric boats are a whole world better than what we saw before the nukes came on. They are quieter and can go deeper than the old U-boats and are a hella lot cheaper than nuclear. Armed with smart cruise missiles they are a real threat to any carrier task force. I'm sure the Navy is working on the problem, but is the political support there?

jn