▁were ▁fear s ▁that ▁the ▁oil ▁rig ▁could ▁dr ift ▁further ▁and ▁cause ▁more ▁damage . ▁The ▁problem ▁was ▁w ors ened ▁by ▁a ▁combination ▁of ▁strong ▁curr ents ▁and ▁the ▁rising ▁t ide ▁( high ▁t ide ▁was ▁at ▁ 1 1 ▁pm ). ▁To ▁prevent ▁the ▁rig ▁from ▁moving , ▁four ▁t ugs ▁put ▁lines ▁ab o ard ▁and ▁worked ▁to ▁and ▁fro ▁in ▁the ▁water ▁to ▁keep ▁the ▁rig ▁steady ▁in ▁the ▁water . ▁ ▁The ▁Naval ▁D iving ▁Unit ▁of ▁the ▁Republic ▁of ▁Singapore ▁Navy ▁was ▁assigned ▁to ▁conduct ▁the ▁under water ▁search ▁for ▁the ▁passengers ▁in ▁the ▁two ▁cab ins ▁which ▁had ▁pl ung ed ▁into ▁the ▁sea . ▁It ▁took ▁the ▁unit ▁three ▁hours ▁before ▁they ▁recovered ▁four ▁bodies ▁from ▁the ▁cab ins . ▁ ▁On ▁land , ▁the ▁Army ▁established ▁an ▁operations ▁H Q ▁and ▁medical ▁facilities ▁at ▁the ▁wh arf - side . ▁ ▁In ▁the ▁air , ▁the ▁ 1 2 0 ▁Squadron ▁of ▁Republic ▁of ▁Singapore ▁Air ▁Force ▁was ▁task ed ▁to ▁rescue ▁the ▁people ▁who ▁were ▁still ▁tra pped ▁in ▁the ▁four ▁cab ins , ▁as ▁the ▁cab ins ▁could ▁not ▁be ▁moved ▁along ▁the ▁remaining ▁c ables . ▁Though ▁an ▁extremely ▁ris ky ▁measure , ▁it ▁was ▁considered ▁the ▁fast est ▁and ▁saf est ▁way ▁as ▁the ▁cab ins ▁might ▁have ▁pl ung ed ▁into ▁the ▁sea ▁at ▁any ▁moment . ▁ ▁The ▁first ▁Bell ▁ 2 1 2 ▁T win - H ue y ▁Search ▁and ▁rescue ▁hel ic opter