| Smyth, Lawrence A. | | | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 1998 Lakeboats; 1998 | 1998 Lakeboats | 1998-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 1999 Lake Boats; 1999 | 1999 Lake Boats | 1999-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 2001 Lake Boats; 2001 | 2001 Lake Boats | 2001-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 2003 Lake Boats; 2003 | 2003 Lake Boats | 2003-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 2004 Lake Boats; 2004 | 2004 Lake Boats | 2004-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; 2005 Lake Boats; 2005 | 2005 Lake Boats | 2005-00-00 | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; ASC Soundings 11(1)1991 | ASC Soundings 11(1)1991 | 1991-00-00 | SAM LAUD | Captain Observer |
| Smyth, Lawrence A.; ASC Soundings 11(5)1991 | ASC Soundings 11(5)1991 | 1991-00-00 | | |
| Smyth, Lawrence A.; ASC Soundings 12(1) 1992 | ASC Soundings 12(1) 1992 | 1992-00-00 | ST. CLAIR | First Mate |
| Smyth, Lawrence A.; ASC Soundings 20(1) | ASC Soundings 20(1) | | WALTER J. MCCARTHY | Captain |
| Smyth, Lawrence A.; ASC Soundings 9(2)1989 | ASC Soundings 9(2)1989 | 1989-00-00 | CHARLES E. WILSON | First Mate |
| Smyth, Lawrence A.; ASC Soundings 9(2)1989 | ASC Soundings 9(2)1989 | 1989-00-00 | AMERICAN MARINER | First Mate |
| Smyth, Lawrence A.; ASC Soundings 9(2)1989 | ASC Soundings 9(2)1989 | 1989-00-00 | ADAM E. CORNELIUS | First Mate |
| Smyth, Lawrence A.; ASC Soundings February 1987 | ASC Soundings February 1987 | 1987-00-00 | FRED A. MANSKE | deckhand |
| Smyth, Lawrence A.; ASC Soundings February 1987 | ASC Soundings February 1987 | 1987-00-00 | BELLE RIVER | Second Mate |
| Smyth, Lawrence A.; ASC Soundings February 1987 | ASC Soundings February 1987 | 1987-00-00 | BELLE RIVER | Second Mate |
| Smyth, Lawrence A.; ASC Soundings March 1984 | ASC Soundings March 1984 | 1984-00-00 | AMERICAN MARINER | First Mate |
| Smyth, Lawrence A.; ASC Soundings November 1984 | ASC Soundings November 1984 | 1984-00-00 | | Wheelsman |
| Smyth, Lawrence A.; ASC Soundings November 1984 | ASC Soundings November 1984 | 1984-00-00 | | Third Mate |
| Smyth, Lawrence A.; ASC Soundings November 1984 | ASC Soundings November 1984 | 1984-00-00 | BELLE RIVER | Second Mate |
| Smyth, Lawrence A.; pc Tom Geiger (1995 ASC Soundings); 1995 | pc Tom Geiger (1995 ASC Soundings) | 1995-00-00 | ST. CLAIR | Captain |
| Smyth, Lawrence A.; pc Tom Geiger (1995 ASC Soundings); 1995 | pc Tom Geiger (1995 ASC Soundings) | 1995-00-00 | INDIANA HARBOR | Captain |
| Smyth, Lawrence A.; pc Tom Geiger (1995 ASC Soundings); 1995 | pc Tom Geiger (1995 ASC Soundings) | 1995-00-00 | WALTER J. MCCARTHY JR. | Captain |
| Smyth, Lawrence A.; Soundings Feb 1988 | Soundings Feb 1988 | 1988-00-00 | BELLE RIVER | Second Mate |
| Smyth, Lawrence A.; Soundings July 1993 | Soundings July 1993 | 1993-00-00 | AMERICAN MARINER | Captain |
| Smyth, Lawrence A.; Soundings June-July 1994 | Soundings June-July 1994 | 1994-00-00 | AMERICAN REPUBLIC | Captain |
| Smyth, Lawrence A.; Soundings Mar-Apr 1997 | Soundings Mar-Apr 1997 | 1997-00-00 | WALTER J. MCCARTHY JR. | Captain |
| Smyth, Lawrence A.; Soundings Mar-Apr 1997 | Soundings Mar-Apr 1997 | 1997-00-00 | ST. CLAIR | Captain |
| Smyth, Lawrence A.; Soundings May 1988 | Soundings May 1988 | 1988-00-00 | CHARLES E. WILSON | Second Mate |