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The History of The Sacajawea

The Sacajawea historic photo

The Sacajawea was built by the Army Corp of Engineers and launched in 1936 and originally christened,  "Robert Gray". She was built near Seattle Washington for the purpose of surveying the Alaskan ocean floor. In 1936 Alaska was not yet a state and it was important for US interests to have some activity there. She went on to fight in WWII and later did important resource surveys both in Alaska and SF Bay.

  • She can accommodate up to 150 guests on a docked event and 10-12 for a charter.

  • She is 127' long and weighs in at 400 tons of riveted high-iron steel.

  • Originally diesel-electric, she was repowered in the 70's with a 750 hp Caterpillar diesel engine.

  • She has 4 generators, a dive compressor, a desalinator, crane and helipad!

  • She was awarded National Historic Registry status as of July 2022!

Our Story - Fathom Adventures

Sacajawea at the glacier

In late 2018,  Fathom Ventures, LLC purchased her and began to transform the Sacajawea back into the beauty she is now, much resembling her 1936 look.


We renamed her Sacajawea because we wanted to honor a strong and adventurous female from a time period before the boat's construction and with a tie to the Northwest. Sacajawea was a guide for the Lewis and Clark expedition and definitely represents strength and courage.


We are proud to offer the ship for events and experiences that will bring joy,  support our community and celebrate her history. This is a labor of complete love for us. We hope to share her with you!

The Sacajawea is available for private charters for up to 12 guests on the west coast.

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