This is how specially trained Marines with a Maritime Raid Force seize a vessel at sea
Marines from the USS Tripoli recently conducted an operation to seize an Iranian cargo ship. The ship, M/V Touska, was first disabled by the Navy destroyer USS Spruance, which fired shots at its engine room. A group of specially trained Marines then fast-roped from helicopters onto the deck to take custody of the vessel.
This operation was carried out by a Maritime Raid Force, a small group of highly trained Marines that specialize in boarding and seizing vessels at sea. Further details of the operation are available from the source, including the involvement of the 31st Marine Expeditionary Unit and the circumstances surrounding the seizure.