Del Mar Boat Basin is a coastal basin located within Marine Corps Base Camp Pendleton in California. It is a saltwater bay connected to the Pacific Ocean, forming part of the larger Oceanside Harbor complex. The basin is used for recreational boating and paddling activities by service members and their families, as indicated by events hosted by the on-base Santa Margarita Yacht Club. Access for paddlers is restricted to authorized personnel associated with the military base, as all references to the basin place it squarely within Camp Pendleton. A specific kayak launch was installed in 2013, though details on its exact location or public availability are not provided. The basin's waters are flat and protected, making them suitable for stand-up paddleboard races, outrigger canoe events, and surfski competitions. These events utilize courses that loop around the harbor and, for longer distances, venture just outside the protective jetty into the open ocean. The transition from the basin to the open ocean can present hazards, as evidenced by an incident where a kayak was flipped by a strong wave, emphasizing that conditions can change rapidly near the entrance. The surrounding area is used for military training, including amphibious assault vehicle maneuvers. The aesthetic is that of a working military harbor with a functional, no-frills character, focused on providing recreational opportunities for the military community.