<Li> USS Wanamassa (YTB - 820) (large Harbor Tug) </Li> <Li> LCU 1671 and MK - 8: landing craft used as an alternate ferry for transportation to areas inaccessible by the primary ferry and for moving hazardous cargo . </Li> <Li> GTMO - 5, GTMO - 6 and GTMO - 7 (50 - ft. utility boats): used for personnel transportation during off - ferry hours . </Li> <P> Besides servicemen, the base houses a large number of civilian contractors working for the military . Many of these contractors are migrant workers from Jamaica and the Philippines, and are thought to constitute up to 40% of the base's population . </P>

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