Bring familiar life-support equipment and essential spares. Confirm cylinder size, valve compatibility and rental fit before departure. Truk Stop describes single and twin aluminum cylinders and several rebreather-cylinder options; these are inventory descriptions, not a reservation. Truk Stop: equipment and power FAQ.
Technical logistics differ substantially by provider. Truk Stop advertises nitrox/trimix blending and rebreather consumables. Truk Stop: dive center. Pacific Master requests technical supplies at least three months ahead. Pacific Master: Truk Lagoon FAQ. Its published itinerary generally limits helium/trimix provision to CCR use. Pacific Master: nine-night Truk Lagoon itinerary. Agree mixes, quantities, consumables and prices in advance.
Verify airline baggage and battery rules against the actual flights and equipment. Carry essential documents and anything irreplaceable that airline rules allow in hand baggage. Do not assume you can rent a missing light or specialist part after landing.