for masters, mates, marine engineers and potential shipa#39;s officers Walter J. Oa#39; Hara ... The shipa#39;s D-C supply is reduced from normal of about 115- Volts to 70- Volts for the D-C service supply, by one of several devices available. In order toanbsp;...
|Title||:||Mariner's gyro-navigation manual|
|Author||:||Walter J. O'Hara|