船东或管理 meaning in English

flag, ownershior management {= fom; f.o.m

In the event of accident whereby loss or damage may result in a claim under this insurance , notice must be given to the underwriters promptly after the date on which the assured , owners or managers become or should have become aware of the loss or damage and prior to survey so that a surveyor may be appointed if the underwriters so desire
4如果发生根据本保险可以索赔的损失或损害的意外事故，须在被保险人、船东或管理人知道或应当知道损失或损害之日后，并在检验前，迅速通知保险人，以便在保险人如此要求时指定检验人。