!5 yrs back, spent a lot of time with an engineer
friend on a 500 ton passeger ferry
built in Ireland
. Power was 2 straight-8 Crossley diesels without clutches. Engineer
stood between engines to operate throttles and air-start and cam-timing wheels.
Throttles were 3ft high cam-and -ratchet type, which stood up out of the floor plates. 24inch brass wheels were parallel to centre-line 0n either side of operator. Rotating wheels clockwise or counter-clockwise set cam timing and opened air-start valves to engine idle speed. Engine RPM
was displayed at eye level below telegraphs.
Wheels were very low-ratio gear
mechanical connection to engines. Getting alongside a 30,000ton cruise ship
swinging at anchor
, in a 25kt breeze, was always fun
Chihuahuas, -if you keep feeding that Yanmar, it may grow up to be a Crosley or a Sulzer