This is a useful book providing the reader with in-depth advice and analysis on all aspects of choosing and deploying a sea-anchor or drogue. There are of course many different theories as to the best course of action in survival conditions - the Pardeys recommend a combination of heaving-to and using a drogue. The type and keel configuration of the boat is all part of the equation too. Endless debate - ideal for the yacht club bar ! Pb. 176pp.