Harry G. Marr
Damariscotta ME
Jonah P. Morse started this shipyard in 1919 and tuned it over to Harry G. Marr in 1939. The yard was in the downtown district, where the municipal parking lot is today.
| O/N | Name | Customer | Type | GT | LOA | Delivered | Notes | |
| Built by Jonah P. Morse | ||||||||
| 224803 | Charles M. Fauci | Peter Marino | trawler | 34 | 58 | 1925 | ||
| 225070 | Roma | Charles Graffeo | 37 | 59 | 1925 | |||
| Sunbeam II | Maine Sea Coast Mission | Mission ship | 1926 | |||||
| 225476 | Helen M | Helen M Co. | trawler | 75 | 81 | 1926 | ||
| 225494 | Elinor and Jean | Otis L. Thomson | trawler | 36 | 62 | 1926 | ||
| 226697 | Grayling | M. L. Gray | trawler | 21 | 50 | 1927 | ||
| 226911 | Francis J. Manta | Joseph A. Manta | trawler | 46 | 71 | 1927 | ||
| 227040 | Antonina | Benny Randazza | trawler | 45 | 67 | 1927 | ||
| 227685 | Olive M. Williams | Gustaf Gustafsson | freighter | 50 | 70 | 1928 | ||
| 228262 | Antonio | Liborio Curcuru | trawler | 54 | 77 | 1929 | ||
| 228280 | Emma Marie | Emma Marie Co. | trawler | 43 | 67 | 1929 | ||
| Columbo | trawler | 88 | 65 | 1929 | to USN 1942 as YP-432, returned to owner 1944 | |||
| 230056 | Mary and Julia | Mary and Julia Co. | trawler | 98 | 88 | 1930 | ||
| 230307 | Venture II | Venture II Inc. | trawler | 118 | 100 | 1930 | to USN 1942 as YP-447, returned to owner 1944 | |
| 230358 | Salvatore | Salvatore Curcuru | trawler | 70 | 82 | 1930 | ||
| 230617 | Ivanhoe | trawler | 52 | 72 | 1931 | |||
| Built by Harry G. Marr | ||||||||
| 231116 | Dart | trawler | 44 | 19 | 1939 | |||
| 239193 | Sunbeam III | Maine Sea Coast Mission | Mission ship | 72 | 66 | 1939 | ||
| 254613 | Security (AMc-103) | US Navy | minesweeper | 205d | 97 | 11 Mar 1942 | sold 1946 as Security, Evelyn M. Holmes 1966, abandoned 1974 | |
| Skipper (AMc-104) | US Navy | minesweeper | 205d | 97 | 29 May 1942 | sold 1946 | ||
| AMc-174/APc 13 | US Navy | coastal freighter | 147d | 103 | 9 Dec 1942 | sold 1947 | ||
| 252987 | AMc-175/APc 14 | US Navy | coastal freighter | 147d | 103 | 28 Jan 1943 | sold 1947 as Northland | |
| 253100 | APc-55 | US Navy | coastal freighter | 147d | 103 | 20 May 1943 | to Britain as Tenderfoot (FT-6), returned, sold 1947 as Eagle | |
| APc-56 | US Navy | coastal freighter | 147d | 103 | 1943 | to Britain, not returned | ||
| APc-57 | US Navy | coastal freighter | 147d | 103 | 1943 | to Britain as FT 20, El Alamein, returned 1950 | ||
| 513459 | Star of the Sea | trawler | 8 | 31 | 1946 | |||