Vessel Type: Comfortable Expedition Length: 52 metres Passenger Capacity: 62 (in twin cabins) Built: 1982 / Refurbished 2015 Nimble, reliable, and built for discovery, National Geographic Sea Lion and National Geographic Sea Bird are twin expedition ships expertly crafted to explore the wild and remote coastlines of North and Central America. Designed with shallow draughts and a compact size, these U.S.-flagged vessels can access places that larger ships simply cannot—slipping into narrow channels teeming with whales, anchoring in secluded bays ideal for snorkelling and kayaking, and edging close to waterfalls and rugged landscapes. With only 62 guests on board each ship and a warm, welcoming crew of 30, the atmosphere remains informal and intimate, fostering a close-knit sense of shared adventure. Both ships offer 31 outside cabins across three decks, along with inviting public spaces such as a lounge with a full-service bar, a library, and a partially covered sundeck with ample seating. Dining is enjoyed in a relaxed, single-seating arrangement with no assigned tables, and menus highlight sustainable and locally sourced ingredients wherever possible. Guests can make use of a fleet of Zodiacs, kayaks, and stand-up paddleboards for immersive exploration, while an “open bridge” policy allows them to interact with the Captain and crew, learning about navigation first-hand. Often described as reminiscent of Cousteau’s Calypso, these ships embody the spirit of true expedition cruising with modern comfort and deep engagement with the natural world.