Shaft RPM Indicator
Pictures taken during a visit to the Tug Ohio at the National Museum of the Great Lakes in Toledo, OH on May 16, 2026 by Norbert Doerry. The Tug Ohio is a lake class tugboat built in 1903 (originally as a fire tug) and operated until 2015. It was extensively modernized several times.
Image (C) Copyright 2026 by Norbert Doerry – licensed via CC BY 4.0
Image (C) Copyright 2026 by Norbert Doerry – licensed via CC BY 4.0
Image (C) Copyright 2026 by Norbert Doerry – licensed via CC BY 4.0
Image (C) Copyright 2026 by Norbert Doerry – licensed via CC BY 4.0
Image (C) Copyright 2026 by Norbert Doerry – licensed via CC BY 4.0
(C) Copyright 2026 Norbert Doerry
This work by Norbert Doerry is licensed under CC BY 4.0
