Rental tanks and standard recreational gear are advertised by named operators on Sal, Boa Vista, Sao Vicente, Santiago and Sao Nicolau, but included equipment and sizes vary. Confirm tanks, weights, BCD, regulator, 3mm/5mm/7mm suits, computer, nitrox, valve type and transfer cost in writing. Bring prescription or fit-critical items, certification and medical documents. Current technical-gas, helium, CCR and hyperbaric support is not verified nationally. Check CVsky baggage allowances and do not place loose batteries or restricted cylinders in baggage contrary to carrier rules.