Oki Mariner Crew

Five heroes crew the Oki Mariner, a ship that doubles as their office, their training ground, and their chore list. Selkie captains the vessel, and every costume aboard nods to the ocean: a diving rig for the captain, sleeveless sailor gear for the sidekicks who back him up.

Downtime is not idle. With no case running, the crew drills, sweeps the coast on patrol, and scrubs the ship down.

Offshore assignments are where this team earns its reputation. The Oki Mariner can survey open water, work the broken shorelines of the Japanese archipelago, and pull alongside a suspicious vessel to board it. Pairing shipboard radar with the crew's own Quirks lets them pin down a target's position at sea. The Japan Coast Guard calls them in when a job needs that reach.

Tsuyu Asui picked the crew for her agency internship because the posting suited her Quirk. Much of that stint went to drills and deck duty, yet she got along well with Selkie and his sidekick Sirius. When the Coast Guard asked for help catching smugglers, the captain and part of his crew walked into a trap first, but Tsuyu and Sirius pinpointed the criminals' boat and bought Selkie the time he needed to close in and finish the fight.

She later hoped to return for a Work-Study, only for U.A. to reject the request because the crew could not meet the school's requirements, sending her to Ryukyu instead. The two teams eventually worked a case together anyway. A smuggling ship hid in the Verize Islands behind a Trigger-boosted smokescreen, so Selkie called Ryukyu in. Selkie boarded and dropped two smugglers, while Ochaco Uraraka, helped by Sirius, took the leader off his escape seaplane, and Ryukyu and Nejire Hado kept the aircraft out of the ocean. Interrogations afterward showed the smugglers were only couriers moving the drug toward Otheon, with no idea who hired them or why.

Selkie captains the crew and leads its assaults personally. Sirius serves as his sidekick and the crew's tactical anchor, tracking targets and coordinating with visiting students. Mick rounds out the named roster, joined by two crew members who go unnamed.

Tsuyu Asui counts as the crew's best-known temporary addition, joining as an intern during the Hero Agency Internships and returning later as a Ryukyu sidekick, to the delight of her former shipmates.