The USS Mariner was a yellow ship (after 1982, it was originally dark blue) located or moored, if you will, behind the center field fence at the Kingdome, that fired a cannon after a Seattle Mariner hit a home run. Its first season was 1982 and the last season the USS Mariner ship was stationed behind the Kingdome's center field fence was 1989. Install the USS Mariner at Safeco Field NOW! As well as a good look at the streamers that used to hang from the Kingdome's ceiling from Opening Night 1985. There were 75 total streamers, 19 red, 37 white and 19 blue. The streamers were removed following the 1987 baseball season.