GE only to start with. GM soon.
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The United States has 18 Ohio-class submarines:
* 14 nuclear-powered SSBNs, each armed with 24 Trident II SLBMs; they are also known as "Trident" submarines, and provide the sea-based leg of the nuclear triad of the United States strategic deterrent forces
* 4 nuclear-powered SSGNs, each armed with 154 Tomahawk cruise missiles with conventional warheads
USS Ohio (SSGN-726), the lead ship of her class of nuclear-powered fleet ballistic missile submarines, was the fifth ship of the United States Navy to be named for the 17th state. She was commissioned with the hull designation of SSBN-726, and with her conversion to a conventional missile submarine she was re-designated SSGN-726.
This image was taken on October 23rd, 2006 (DigitalGlobe image). SSGN-726 Ohio was returned to service in Febuary 2006 while the other Bangor based boat, SSGN-727 Michigan, was still in the yard when the image was taken. So... this boat must be the Ohio.
I have not found no drawings of the converted Ohios, but NavSource.org has some pictures that show the convertion. Look at the USS Florida page for example. The second to last pictures is a good view of the widened upper deck and the docking ports for the ASDS.
Also note the US Coast Guard escorts of the sub: a 110-ft. patrol boat to the north, a 87-ft. boat to the south and Reliance class cutter farther behind.