E. K. Wood Lumber Company commissioned the Sierra to move timber -- the core business of every enterprise on Grays Harbor in the early twentieth century. But the ship's power plant set her apart. Motor ships were still uncommon on the Pacific coast in 1916, and Bolinder's heavy-oil engines represented Scandinavian engineering transplanted to the American Northwest. The fact that Bolinder dispatched a representative to oversee the installation underscores how unusual the arrangement was: these weren't off-the-shelf machines, and the Swedish firm wanted to make sure they ran right. Once commissioned, the Sierra proved her range early. Her first long voyage took her to Valparaiso, Chile, carrying Pacific Northwest lumber thousands of miles down the coast of the Americas. For a ship born on a Washington harbor, it was a bold debut.

Working the Pacific coast in the early twentieth century meant accepting a catalogue of hazards. On February 7, 1923, the Sierra was steaming near San Francisco when dense fog closed in and the steamship Wilhemina struck her. The collision was severe -- damages were estimated at $135,000, a staggering sum at the time. The Sierra was repaired and returned to service, only to face a different disaster three years later. In 1926, while berthed at Berth 77 in the Port of Los Angeles, she caught fire. The blaze holds a small place in maritime history: it was the first fire ever fought by the fireboat Los Angeles City No. 2, a vessel that would go on to serve the port for 78 years. The Sierra survived that, too. Then came reinvention. Sold in 1927, she was fitted with refrigeration equipment and reassigned to carry reindeer meat from Alaska for the Arctic Transport Company -- a cargo about as far from Pacific Northwest lumber as a ship could haul.

After decades of service under various owners and in various configurations, the Sierra began a journey back to what she had been. In 1964, a new owner started restoring her to her original lumber-carrying configuration, stripping away the refrigeration equipment and the modifications accumulated over nearly fifty years of adaptation. It was an unusual act of preservation for a working vessel -- most ships that outlive their usefulness are scrapped, not restored. The effort recognized that the Sierra's significance lay not just in her age but in what she represented: the moment Grays Harbor's maritime industry made the leap from steam to motor power. In 1978, that recognition became official when the Sierra was added to the National Register of Historic Places, one of a small number of working vessels to receive the designation.

Grays Harbor in 1916 was a place defined by timber and the ships that carried it. Schooners and steamers crowded the waterfront, loading lumber bound for markets up and down the Pacific coast and beyond. Into that world of masts and smokestacks, the Sierra introduced something new: a diesel-powered future that would eventually make both sail and steam obsolete on commercial routes. She didn't announce that future loudly. She was a lumber carrier, built to do a job, and she did it. But the Swedish engines turning in her hull were the beginning of a transformation that would reshape commercial shipping worldwide. Standing at the Hoquiam waterfront today, it takes imagination to picture the harbor as it was -- choked with vessels, loud with industry, thick with the smell of fresh-cut fir. The Sierra is a thread connecting that vanished world to the present, a wooden ship with an iron heart that outlasted the era that built her.