Calico Jack is a 30-metre traditional Indonesian Phinisi built for small-group dive expeditions, carrying a maximum of 10 guests in 5 en-suite, air-conditioned cabins (two convertible double/twin cabins, two double cabins and one twin cabin). Onboard facilities include a dedicated dive deck with a Nitrox system, two dive tenders, a camera preparation area with rinse tanks, a sun deck, an open-air dining area and lounge spaces. Small dive groups (max 4-5 divers per guide, near 1:1 crew-to-guest ratio) are led by experienced English-speaking dive guides, often alongside a marine-biologist cruise director. The onboard chef serves Asian-fusion and international cuisine, and signature beach BBQ evenings on remote islands are a trip highlight, along with kayaking and stand-up paddleboarding between dives. Calico Jack runs 8 to 11-night expeditions from Sorong through Raja Ampat, Triton Bay and the Banda Sea (Spice Islands).