Landing Craft Utility (LCU) 1666, assigned to Naval Beach Unit (NBU) 7, enters the well deck of the amphibious assault ship USS Bonhomme Richard (LHD 6).

The LCU is a type of boat used by amphibious forces to transport equipment and troops to the shore. They are capable of transporting tracked or wheeled vehicles and troops from amphibious assault ships to beachheads or piers. (https://en.wikipedia.org/wiki/Landing_Craft_Utility)