geological survey barge(地質調查船)

investigational research vessel(調查觀測船)

magnetometric sensing boat(掃雷船,磁力探測船)

oil fence boat(油索船)

oil recovery vessel(油回收船)

scavenger boat(清掃船)

supervision boat(監工船,安全監視船)

survey boat(測量船)

working vessels(作業船)