National Geographic Sea Lion

National Geographic Sea Lion is the twin of National Geographic Sea Bird, and this page will not pretend otherwise. Same yard, Nichols Brothers Boat Builders on Whidbey Island, same year, 1982, and delivered within about six months of one another for Seattle’s Exploration Cruise Lines, one as Great Rivers Explorer and one as Majestic Alaska Explorer. Same 152 feet, same 31-foot beam, same three decks, same thirty-one cabins and sixty-two guests, same thirty crew, same 2015 interior refit. If you are choosing between them, choose on the itinerary, because there is nothing else to choose on.

What forty-four years of Alaska looks like

Where the sisters differ is in what they have been asked to do. Sea Lion is the one with the wider range. Her working areas have included Alaska, Baja California, the Pacific Northwest and Belize, a spread the Columbia-focused Sea Bird never quite matched. Southeast Alaska is what she is known for, and it is the deployment that explains the hull.

A US-flagged ship is required to run port-to-port inside American waters, and almost nothing else in Lindblad’s fleet qualifies. Then there is the draft. She was built small on purpose (under a hundred registered tons, displacing around three hundred and sixty), and small on purpose means she can push into narrow, fast-moving channels, tuck into protected anchorages in bays with no dock, and transit the locks of the Pacific Northwest. That is the argument for a forty-four-year-old boat: not what she is, but where she fits.

The expedition kit is a set of Zodiacs and kayaks, launched off the side. Nothing more elaborate. On a vessel with sixty-two guests, the staff-to-guest ratio and the naturalists’ knowledge of the coast do the work that gadgets do on the big polar ships.

Where she actually sails, one last time

Her final schedule splits almost evenly. Roughly half her remaining departures are Southeast Alaska out of Sitka and Juneau (the short weeks, five nights being the commonest length), and the other half are the Columbia and Snake out of Clarkston and Portland, with a long repositioning voyage or two of up to two weeks connecting the two. Everything ends in late October.

After that she is done. Lindblad announced in December 2025 that both sisters would retire, and from 2027 the routes pass to Greg Mortimer, a 2019-built, 154-guest ship chartered from Aurora Expeditions and roughly two and a half times the size. Whatever that ship gains in comfort, the fleet loses something in access: a 152-foot boat gets into places a 300-foot one does not.

Who she suits

The same people her sister suits, travelers who want Alaska at water level with someone qualified explaining what they are looking at, and who will trade cabin size for anchorage. There is also a straightforward reason to book her in 2026: she will not be here in 2027, and the small-ship version of these itineraries ends with her.

She does not suit anyone expecting a modern ship. The cabins are small and windowed rather than balconied, there is one lounge, one dining room and a sun deck, and getting between the three decks means stairs. Bad weather on a 152-foot hull is felt. Anyone who wants the same coast with more room and better sea manners should look at National Geographic Quest or Venture.