Gold Medal's modern USN set lists the following: railing in several styles including pre-shaped sections for upswept bow. Vertical and inclined ladders, flight deck safety nets, SH-60 helicopter rotors, yardarm footrails and anemometers, screws for Spruance and Ticonderoga-class ships (1/350 version only),
SPS-6, SPS-10, SPS-12, SPS-29, SPS-40, SPS-49, and OPS-14B radars, masts and platforms for FF-1052 and FFG-7 class ships.
As for Mk13 torpedo tubes, ASROC, and tripod masts, you'll either have to scrounge them from another kit, scratchbuild them, or contact Commander's models and ask if they'll sell you parts from their FRAM Gearing kit.
Jeff