Section 6(1)(h) in The Merchant Shipping (Wrecks and Salvage) Rules, 1974
(h)if the wreck consists of any vessel owned and operated by a Government Department or any article of cargo or equipment of such vessel, send a written intimation giving full particulars of such vessel or, as the case may be, its articles of cargo or equipment to: the appropriate authorities of the Department concerned, under intimation to the principal officer: