Yes, on board expedition ships sailing our polar, Great Lakes and Grand Journeys itineraries are two 6-seater submarines custom-designed to explore underwater in various regions. Trips are approximately 1 hour in total length (30 minutes underwater, plus time to embark and disembark).\\u0026nbsp;Submarines dives are part of our optional excursion program and available for viewing, before your departure, on MyVikingJourney.com. Guests can make a reservation for a Submarine Dive ahead of their departure. Date and time will be confirmed on board and charged $499 USD per person (effective for voyages booked after April 1, 2023). This will be added to guests’ onboard account upon completion of excursion. Please note, if a confirmed guest cancels less than 48 hours prior to a scheduled dive, a $299 USD cancellation fee may apply. Submarines may not be available or allowed to be deployed on all itineraries. Learn more about our\\u0026nbsp; expedition equipment .