- line ▁on ▁ 6 ▁June ▁ 1 9 2 8 , ▁O - 1 ▁was ▁converted ▁to ▁an ▁experimental ▁vessel ▁on ▁ 2 8 ▁December ▁ 1 9 3 0 , ▁and ▁operated ▁in ▁this ▁capacity ▁out ▁of ▁the ▁sub marine ▁base ▁at ▁New ▁London , ▁Connecticut , ▁until ▁de comm ission ing ▁on ▁ 1 1 ▁June ▁ 1 9 3 1 . ▁She ▁was ▁str icken ▁from ▁the ▁Naval ▁V essel ▁Register ▁on ▁ 1 8 ▁May ▁ 1 9 3 8 ▁and ▁sold ▁for ▁sc rap . ▁ ▁Gallery ▁ ▁Notes ▁ ▁References ▁ ▁External ▁links ▁▁▁ ▁Category : Un ited ▁States ▁O - class ▁sub mar ines ▁Category : World ▁War ▁I ▁sub mar ines ▁of ▁the ▁United ▁States ▁Category : Sh ips ▁built ▁in ▁K itter y , ▁Maine ▁Category : 1 9 1 8 ▁ships <0x0A> </s> ▁Green ▁Island ▁L ighth ouse ▁may ▁refer ▁to : ▁▁ ▁Green ▁Island ▁L ighth ouse ▁( H ong ▁Kong ), ▁one ▁of ▁China ' s ▁l ighth ouses ▁ ▁Green ▁Island ▁L ighth ouse ▁( B rit ish ▁Columbia ), ▁in ▁Prince ▁Ru pert , ▁British ▁Columbia , ▁Canada , ▁one ▁of ▁British ▁Columbia ' s ▁l ighth ouses <0x0A> </s> ▁is ▁a ▁very ▁ecc ent ric , ▁st ony ▁astero id ▁and ▁near - E arth ▁object , ▁approximately ▁ 1 ▁kilometer ▁in ▁diameter . ▁It ▁was ▁discovered ▁on ▁ 2 ▁November ▁ 1 9 8 9 , ▁by ▁American ▁astronom er ▁couple ▁Carol yn ▁and ▁Eug ene