| Powell, David J. | | | WALTER J. MCCARTHY | First Assistant |
| Powell, David J.; ASC Soundings 11(1)1991 | ASC Soundings 11(1)1991 | 1991-00-00 | WALTER J. MCCARTHY JR. | Second Assistant |
| Powell, David J.; ASC Soundings 12(1) 1992 | ASC Soundings 12(1) 1992 | 1992-00-00 | ADAM E. CORNELIUS | First Assistant |
| Powell, David J.; ASC Soundings 9(2)1989 | ASC Soundings 9(2)1989 | 1989-00-00 | BELLE RIVER | Second Assistant |
| Powell, David J.; ASC Soundinngs Apr 1990 | ASC Soundinngs Apr 1990 | 1990-00-00 | BELLE RIVER | Second Assistant |
| Powell, David J.; InlandMariners | InlandMariners | | CHARLES E. WILSON | |
| Powell, David J.; InlandMariners | InlandMariners | | INDIANA HARBOR | Chief Engineer |
| Powell, David J.; pc A. LeBorde | pc A. LeBorde | | INDIANA HARBOR | Chief Engineer |
| Powell, David J.; pc Tom Geiger (1995 ASC Soundings); 1995 | pc Tom Geiger (1995 ASC Soundings) | 1995-00-00 | WALTER J. MCCARTHY JR. | First Assistant |
| Powell, David J.; Soundings Dec 1994 | Soundings Dec 1994 | 1994-00-00 | | Second Assistant |
| Powell, David J.; Soundings July 1993 | Soundings July 1993 | 1993-00-00 | ADAM E. CORNELIUS | First Assistant |
| Powell, David J.; Soundings June-July 1994 | Soundings June-July 1994 | 1994-00-00 | WALTER J. MCCARTHY JR. | First Assistant |
| Powell, David J.; Soundings Mar-Apr 1997 | Soundings Mar-Apr 1997 | 1997-00-00 | WALTER J. MCCARTHY JR. | First Assistant |
| Powell, David J.; Soundings May 1988 | Soundings May 1988 | 1988-00-00 | ST. CLAIR | Second Assistant |