Spars and Rigging they give specific instructions for

they give specific instructions for forming letters

unceasingly

The mathematical background required has been kept to a minimum and supplemented by explanations where it has been necessary to introduce specialized mathematics

equivalence

scientific treatise

Spars and Rigging they give specific instructions forRelying on his own experience in the U. S. Navy and consulting his contemporaries in the maritime profession, midshipman John Murphy published this book to provide an accurate portrait of a ship's rigging and spars (masts or yardarms supporting or extending a ship's sail). An important book in maritime history, the study describes every improvement made in seafaring equipment up to 1849. The thorough text is accompanied by more than 200 clear