Answer: Yes. CPAP, BiPAP, APAP, and ventilator machines are allowed to be used on board. Remember to bring all necessary supplies for your device as these are not available on board.
Carry these devices in your hand luggage to avoid breakage. The ship’s crew is not permitted to handle medical equipment during the embarkation and disembarkation process, so you must be able to carry all your own equipment and supplies.
For additional information related to the use of supplemental oxygen through concentrators or tanks, please see FAQ "Can I receive oxygen deliveries onboard?".