Navalized SAR version of the H-19B powered by a 700hp Wright R-1300-3 Cyclone engine. Redesignated UH-19G in 1962, 10 built: 7 for USCG & 3 for RCN. 
List of Operators of Sikorsky HO4S-2 | |
| From | Organisation with model HO4S-2 | |||||
| 1951 |
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| 1952 |
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| Construction Numbers on database of HO4S-2 | ||||||
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Construction Numbers | Help Us | |
| C/N | Year | History | |
| 55-086 | 1951 |  1252 : Sikorsky S-55 c/n 55-086, ff:?; del USCG as HO4S-2, 125+ sold as surplus 17oct65 | |
| 55-087 | 1951 | 1253 : Sikorsky S-55 c/n 55-087, ff:?; del USCG as HO4S-2, 125+ N17376 : ex 1253 | |
| 55-088 | 1951 | 1254 : Sikorsky S-55 c/n 55-088, ff:?; del USCG as HO4S-2, 125+ N2842J : ex 1254 | |
| 55-096 | 1951 | 1255 : Sikorsky S-55 c/n 55-096, ff:?; del USCG as HO4S-2, 125+ N62255 : ex 1255 | |
| 55-097 | 1951 | 1256 : Sikorsky S-55 c/n 55-097, ff:?; del USCG as HO4S-2, 125+ N1562 : ex 1256 | |
55-098  | 1951 | 1257 : Sikorsky S-55 c/n 55-098, ff:?; del USCG as HO4S-2, 125+ w/o 11feb56 | |
| 55-099 | 1952 | 1258 : Sikorsky S-55 c/n 55-099, ff:?; del USCG as HO4S-2, 125+ N17377 : ex 1258 | |
| 55-144 | 1952 |  55144 : HO4S-2; RCN d/d 29apr55; w/o 25jun57 McNabs Island Hali+ Sikorsky S-55 c/n 55-144, ff:?; ordered by Pratt & Whit+ | |
| 55-305 | 1952 | 55305 : RCN d/d 05dec52; HO4S-2 conv to HO4S-3; wfu 08may70 N65375 : ex 55305 | |
| 55-320 | 1952 | 55320 : HO4S-2; RCN d/d 19dec52; 1955 conv to HO4S-3; w/o 10ju+ |