As far as we can ascertain, the 343rd Harbor Craft Company trained other Harbor Craft personnel in the operation of Freight and Supply Ships, using a fleet of type ships and traveling to Galveston, St. Petersburg, Tampa, New Orleans, and Mobile. the Museum continues to search for more information on this company.
Here is a partial roster of the 2nd Lts. who were part of the 343rd HC Training Group:
| 343 | Barker | Perry M. | 2nd Lt | 0531742 |
| 343 | Begley | John R. | 2nd Lt | 01038264 |
| 343 | Burr | Howard F. | 2nd Lt | 01038434 |
| 343 | Cockrell | Donald E. | 2nd Lt | 01036908 |
| 343 | Costello | Thomas R. | 2nd Lt | 01038010 |
| 343 | Dybes | Samuel | 2nd Lt | 01039303 |
| 343 | Emond | Alfred A. Jr. | 2nd Lt | 0514290 |
| 343 | Heimann | Erwin F. | 2nd Lt | 01039382 |
| 343 | Hoffman | Leon | 2nd Lt | 01039395 |
| 343 | Livingston | Donald C. | 2nd Lt | 01535361 |
| 343 | Mason | Joseph M. | 2nd Lt | 0524082 |
| 343 | Mosgrove | George G. | 2nd Lt | 01039809 |
| 343 | Pollak | Alfred A. Jr. | 2nd Lt | 01039852 |
| 343 | Reeves | John R. Jr. | 2nd Lt | 0533011 |
| 343 | Sayles | Sheldon W. | 2nd Lt | 01535416 |
| 343 | Storch | Edward A. | 2nd Lt | 01039584 |
Very Partial Roster (2 names), which includes an account of the crew of the FS 105 in Feb 1945
From CGJ Orders
343 Hermann Richard W. 2nd Lt. 0545780 10-Apr-44 Mate
343 Carter Morley J. WOJG W2139844 10-Apr-44 Mar Engr
343 Hall Joseph E. 2nd Lt. 0545439 10-Apr-44 Mar Engr
