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Nina Ullrich, ABYC

Tel: (410) 990-4460 x105

Email: nullrich@abycinc.org


New Propeller Text Advances Westlawn’s Systems and Equipment Course


November 20, 2013, Eastport, ME: Westlawn Institute of Marine Technology, the not-for-profit educational affiliate of the American Boat & Yacht Council (ABYC), has incorporated a new textbook for Westlawn students that is pivotal to Westlawn’s Module-4 course. Propellers: Form Function, Selection, Speed & Powering and Problem Solving was penned by naval architect and Westlawn director Dave Gerr. 



Propellers incorporates the latest on propeller selection, sizing, and problem solving. It includes topics such as:

    Blade characteristics

    Engine power curves

    Estimating boat speed

    Propeller calculations for displacement and planing hulls

    Propeller geometry

    Propeller shaft standards

    Propellers for variable thrust and high thrust

    Special propeller considerations and problems

    Theory behind the hull-speed constant.


“This new propeller textbook is part of Westlawn’s ongoing updates to the curriculum,” stated Gerr. “It is a process that never stops and is one of the reasons our courses are so comprehensive and our alumni are so successful.” 


This is the second propeller book written by Gerr. He also wrote Propeller Handbook that was published by International Marine/McGraw-Hill in 1989 and has been used as the industry standard reference since then. Propellers incorporates Gerr’s latest research and conclusions on the subject, as a result of the last twenty five years of experience.


Additional updates on subjects such as aluminum hull structure, mechanical systems, and structural design will be released in the coming months.


To learn more about Westlawn, please call (207) 853-6600 or visit www.westlawn.edu.



Founded in 1930, the Westlawn Institute of Marine Technology is the only nationally accredited distance-learning school of small-craft design in the United States. Westlawn is accredited by the Distance Education and Training Council (DETC), in Washington DC, and is listed as an accredited school by the U.S. Department of Education and by the Council for Higher Education Accreditation. As the not-for-profit educational affiliate of the American Boat and Yacht Council, the mission of the Westlawn Institute of Marine Technology is:

·       To provide our students with the skills and knowledge required to build a rewarding career in the profession of yacht and small-craft naval architecture via distance learning.

·       To support continued growth of the recreational and small-craft marine community through the development of well-trained, safety-oriented, boat designers developing better products for the benefit of the boating public.

·       To provide continuing education to marine-industry professionals.


To learn more about Westlawn, please call (207) 853-6600 or visit the Westlawn website at: www.westlawn.edu.