Main Characters Lt. Dolores Crandall 6 main appearances Seaman 'Doom & Gloom' Broom 6 main appearances Yeoman Hunkle 6 main appearances Lt. Cmdr. Matthew Sherman 3 main appearances Lt. Nick Holden 3 main appearances Major Edna Howard 3 main appearances Lt. Barbara Duran 3 main appearances Lt. Ruth Colfax 3 main appearances Lt. Claire Reid 3 main appearances Ensign Stovall 3 main appearances Seaman Dooley 3 main appearances Chief Herbert Molumphrey 3 main appearances Pharmacist's Mate Williams 3 main appearances Radioman Gossett 3 main appearances Chief Machinist's Mate Tostin 3 main appearances Ramon Gallardo 3 main appearances Seaman Horwich 3 main appearances Lt. Watson 3 main appearances Lt. Mike Bender 3 main appearances Lt. Cmdr. Haller 3 main appearances Lt. Katherine O'Hara 3 main appearances Chief Engineer Dobritch 3 main appearances Lt. Betty Wheeler 3 main appearances Doplos 3 main appearances Seaman Horner 3 main appearances Seaman Dixon 3 main appearances
Recurring Guest Characters Admiral Edgar Summers 3 guest appearances Mrs. Sommers 2 guest appearances Lt. O'Reilly 1 guest appearances Lt. Kern 1 guest appearances Steve Fleming 1 guest appearances Lt Green 1 guest appearances Elaine Summers 1 guest appearances