Outboard motors typical of those employed in the fishery were used in the project. These included 1970 Johnson motors of 40 and 60 hp, a 1970 50-hp Mercury, and a 1970 55-hp Fisher-Pierce Bearcat. ... Hydraulic General Considerations Hydraulics has been aptly defined as aquot;the science of transmitting force and/or motion through the medium of a confined liquid. ... fishing machinery resulted in the following initial design specifications.1 Salmon trolling gurdies per spool: Average ofanbsp;...
|Author||:||Oregon. Agricultural experiment station, Corvallis|