Boat handling requires an understanding of many variables and complex problems. Though you can only develop boat-handling skills through hands-on experience, the information covered in this chapter will provide you with a basic description of principles and practices. Though good coxswains and captains are familiar with the characteristics of their boat and how it operates, the best coxswains are knowledgeable in the operation of all types of small craft, including sailboats and personal watercraft. They know how varying weather and sea conditions affect the operation of their vessel, and are keenly aware of the limitations that weather and sea impose on other vessels.
Source: http://www.vmrs.org/uploads/5/1/3/9/5139143/ch_6_scr.pdf