<a href="https://en.wikipedia.org/wiki/Martin_PBM_Mariner" class="extiw" title="en:Martin PBM Mariner">Martin PBM Mariner</a> on <a href="https://en.wikipedia.org/wiki/Coast_Guard_Air_Station_Salem" class="extiw" title="en:Coast Guard Air Station Salem">Coast Guard Air Station Salem</a>'s slipway.
US Coast Guards
<a rel="nofollow" class="external free" href="http://www.uscg.mil/history/stations/airsta_salem.asp">http://www.uscg.mil/history/stations/airsta_salem.asp</a>