Response Boat – Medium
 The Response Boat – Medium (RB-M) is a 45-foot (14 m) utility boat used by the United States Coast Guard. It is intended as a replacement for the Coast Guard's fleet of 41-foot (12 m) utility boats (UTB) which have been in use by the Coast Guard since the 1970s. The Coast Guard plans to acquire 170 of these RB-Ms over a 6–10 year period.