0002090787 2026-09-30 2026-09-30 0002090787 ohacu:UnitsEachConsistingOfOneClassAOrdinaryShareAndOneRightToReceiveOneFourthOfOneClassAOrdinaryShareMember 2026-09-30 2026-09-30 0002090787 ohacu:ClassAOrdinaryShareParValue00001PerShareMember 2026-09-30 2026-09-30 0002090787 ohacu:RightsEachRightToReceiveOnefourthOfOneClassAOrdinaryShareMember 2026-09-30 2026-09-30 Oceanhawk Acquisition Corp. Units, each consisting of one Class A ordinary share and one-right to receive one-fourth of one Class A ordinary share 0002090787 false 8-K 2026-09-30 E9 001-43309 98-1886973 515 Madison Avenue 8th Floor New York NY 10022 212 931-1898 false false false false OHACU NASDAQ Class A ordinary share, par value $0.0001 per share OHAC NASDAQ Rights, each right to receive one-fourth of one Class A ordinary share OHACR NASDAQ true false