Channel Islands Access in Ventura provides boat departure points for reaching the five islands of Channel Islands National Park, with Island Packers operating year-round concessionaire service from Ventura Harbor (1691 Spinnaker Drive) and a satellite office in Oxnard's Channel Islands Harbor.

Free parking is available at the Ventura Harbor location, and the Robert J. Lagomarsino Visitor Center at 1901 Spinnaker Drive offers trip planning resources, exhibits, and a viewing tower.

Private boats and kayaks are also permitted to access all five islands throughout the year, with multiple outfitters offering guided kayaking and diving trips from the harbor.