US Coast Guard Cutters :
Legend-class cutters have increased data link bandwidth.[
citation needed] The
Hensoldt (formerly
EADS North America) TRS-3D radar system provides three-dimensional air and surface search functions and is used in the LCS program as well as the German
Korvette 130 program.
[27] The cutters are also equipped with the AN/
SLQ-32(V)2 Electronic Warfare (EW) system used in the DDG-51.
[28] The Legend class is equipped with the same 220 rpm
Bofors 57 mm gun as mounted on the USN's
Littoral combat ships.
[29] Guided 57 mm ammunition is being developed for the Mk 110 for the Navy and Coast Guard, including for use on the National Security cutters.
[30] The Missile Defense duties are handled by the MK 53 NULKA decoy systems, the MK 36 SRBOC countermeasure systems also used on the FFG-7 and CG-47 programs and the Phalanx
CIWS.
[31] The combination of the Mk 110 and the Phalanx give the cutter's
Anti-Surface capability, limited Air-Defense capability and the capability to provide naval gunfire support.
[32]
The cutters have space, weight, and power reserved for additional weapons and systems which includes mine warfare systems, non-line of sight missiles, and can have a SeaRAM replace the 20mm Phalanx CIWS.[33][34] The NSC is capable of carrying a sonar that is reported as having mine and underwater swimmer location ability.
The NSC has a NBC detection and defense system to repel chemical, biological, or radiological attacks and has wash-down systems.
[36] The cutter's weapons, command and control suite can be upgraded and is hardened to survive potential attacks and process increased data flow.
[37]
I dont think that little rinky dink sub wanted it with a Cutter