(Decanter) - The container ship that ran aground on a reef off New Zealand's North Island last week contained at least 4000 cases of wine. Marlborough producer Astrolabe confirmed it had 4000 cases of wine on board cargo ship, Rena, with a retail value of up to NZ$800,000 (£400,600). It is likely there are more wineries affected with one local wine insurance specialist urging clients to come forward with documentation. But, Jason Yank, general manager of Astrolabe told Decanter.com, 'The wine is not yet lost or damaged so there's nothing we can do. It also means we can't make an insurance claim.