Operating the USCG-inspected M/V Islander out of Point Loma since 2004, Islander Charters runs 5-day Great White Shark cage dive expeditions to Guadalupe Island, Mexico from its 2838 Garrison Street dock. The 88-foot American-flagged steel-hulled vessel boards passengers at Fisherman's Landing for the overnight run to Ensenada customs clearance before the onward passage to Guadalupe. The Great White cage-dive program launched in 2004 and runs under a lead Divemaster handling cage-safety briefings, water-entry procedures, and on-site seminars for every sailing. The vessel's marine-grade radar, sonar, and navigation electronics require regular tuning to maintain multi-day offshore performance, a service category delivered on Shelter Island by Shelter Island Marine Electronics. Flagship Guadalupe Island expeditions run five days with air-conditioned staterooms, three-meal galley service with hors d'oeuvres, and dedicated cage-dive time at the Pyramid and Roca Partida formations where adult male Great Whites reliably return each season.