Ob-1:

3 ship citations (0 free) in 3 resources
Ob 1 (ON: 274969; built in 1957, at Hood River, OR; 57.8 ft long) Subscribe to view
OB 1 (Tug; registration numbers: (US)) Subscribe to view
Ob-1 (Towing Vessel; Juneau, AK; built 1957; 40 gross tons; call sign WK4449) Subscribe to view