Portuguese Navy
NRP "Almirante Gago Coutinho (A523) is a ship of the Portuguese Navy' "Dom Carlos I"-class survey vessels (ex-US adapted in Portugal for the execution of hydrography and oceanography surveys). Before transfer to the Portuguese Navy, "Almirante Gago Coutinho" was formerly USNS "Assurance (T-AGOS-5) of the United States Navy.