Idaho was a wooden steamship built for Pacific Coast passenger and freight service. She was launched in 1866 and wrecked in 1889. She was one of the first ocean-going steamships to provide regular service to the northwest coast of North America.
Idaho was built in Bath, Maine and launched on August 11, 1866. She was a wooden ship, built of oak, yellow pine, and hackmatack. She was 198 feet (60 meters) long, with a beam of 31 feet (9.4 meters), and a draft of 17 feet (5.2 meters). She displaced 1,077 gross tons. Her primary propulsion was provided by a coal-fired steam engine which had a single 44″ cylinder and a 3′ stroke. The engine turned a fifty-six foot-long shaft to drive a single propeller 12 1/2′ in diameter. She also had two masts and could sail. One report said she cost $250,000 to build. She was built in the shipyard of George F. and John Patten, a partnership between two brothers.
As originally constructed, her interior spaces included forty three-berth staterooms, a dining salon which could seat 100, a ladies’ cabin, and a gentlemen’s smoking room. An 1880 refit gave slightly more space for cargo, reducing cabin capacity to 100 and steerage capacity to 125 people.