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Trident I/II and Ohio SSBNs

Posted: Sat Nov 21, 2020 1:42 am
by N328KF
I think this qualifies for this forum since it is a question about SLBMs (ie. 'aviation'). if not, please move to NonAv.

The first eight Ohio SSBNs carried the Trident I SLBM, while the last eight carried Trident II. The Navy upgraded the older units to Trident II, but did they actually bother doing so with the first four Ohios? Did they go straight from Trident I to SSGN?

Re: Trident I/II and Ohio SSBNs

Posted: Sat Nov 21, 2020 2:11 am
by Ozair
N328KF wrote:
I think this qualifies for this forum since it is a question about SLBMs (ie. 'aviation'). if not, please move to NonAv.

The first eight Ohio SSBNs carried the Trident I SLBM, while the last eight carried Trident II. The Navy upgraded the older units to Trident II, but did they actually bother doing so with the first four Ohios? Did they go straight from Trident I to SSGN?

According to the USS Georgia wiki page the vessel had its Trident C-4s removed in Nov 2003 before redesignation to SSGN in March 2004. Appears to me that those boats operated the C-4 until their redesignation and conversion.

On 7 November 2003, while Georgia was docked at Bangor, Washington, her C-4 Trident I missiles were offloaded.

https://en.wikipedia.org/wiki/USS_Georgia_(SSGN-729)

Re: Trident I/II and Ohio SSBNs

Posted: Sat Nov 21, 2020 10:34 am
by JayinKitsap
Ozair is correct, the first 4 Ohio Class were converted to SSGN. At least 2 were done at PSNS, just down the Sound from me.

Re: Trident I/II and Ohio SSBNs

Posted: Sat Nov 21, 2020 2:48 pm
by 889091
Interesting article I found whilst looking up Ohio SSGNs
https://www.thedrive.com/the-war-zone/3 ... ts-the-eye

Launching Tomahawks from the vertical tubes, I get. But how do they launch Harpoons from the torpedo tubes (Los Angeles class)?

Re: Trident I/II and Ohio SSBNs

Posted: Sat Nov 21, 2020 8:06 pm
by Ozair
889091 wrote:
Interesting article I found whilst looking up Ohio SSGNs
https://www.thedrive.com/the-war-zone/3 ... ts-the-eye

Launching Tomahawks from the vertical tubes, I get. But how do they launch Harpoons from the torpedo tubes (Los Angeles class)?

Harpoon is held within a capsule whose cap is removed once it breeches the surface at which point the missile fires.

YouTube video of USS Olympia launching a harpoon here, https://youtu.be/Wh-A17E06tE

Image of the process, Image

Interestingly the plan is to return Harpoon to the USN sub Pacific fleet as a stop gap to combat increasing Chinese naval numbers.

Re: Trident I/II and Ohio SSBNs

Posted: Sun Nov 22, 2020 12:57 pm
by 889091
Thanks Ozair. Very interesting indeed!