Perhaps an Amphib http://www.shipbucket.com/images.php?dir=Real Designs/United States of America/LCI-397.png or an old PGM http://www.shipbucket.com/images.php?dir=Real Designs/United States of America/PGM-1.png http://www.shipbucket.com/images.php?dir=Real Designs/United States of America/PGM-9.png...