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Archive for Propeller Guards – Page 8

Propeller Guard Test Protocol Draft: PGIC Public Comments

ABYC (American Boat and Yacht Council) and CED (CED Investigative Technologies) recently completed a draft of the Propeller Guard Test Protocol. We announced they requested public comment from interested parties by April 11, 2012 on our Propeller Guard Test Protocol Released by ABYC/CED for Public Comment page. We sent in our comments today (April 11, […]

Propeller Guard Test Protocol Rough Draft Released by ABYC / CED for Public Comment

Effectiveness of Propeller Guards About 2006 the U.S. Coast Guard began consulting and contracting with some experts to produce a test protocol for propeller guards. The American Boat and Yachting Council (ABYC) and CED Investigative Technologies are now finalizing that process for USCG. CED Investigative Technologies is a forensic engineering and accident reconstruction firm specializing […]

Lawrence E. “Larry” Thibault Obituary

We just became aware of the passing of Dr. Lawrence “Larry” Thibault back on September 10, 2011. He was well know as a biomechanics expert witness for the plaintiffs in propeller strike cases. Dr. Thibault, a former Chairman of the School of Bioengineering at the University of Pennsylvania, and founded Biomechanics, Inc. at Exton Pennsylvania. […]

Yale and MIT Release Study of Human Sensing Methods

A paper by Thiago Teixeira and Andreas Savvides from Yale and Gershon Dublon of the Massachusetts Institute of Technology surveys methods used to detect the presence of humans. This work could be very useful for those designing virtual propeller guards (propeller guarding technologies based on sensors). The paper, A Survey of Human-Sensing: Methods for Detecting […]

Guard Technologies Category Launched

Prior to mid 2011 we captured technologies with potential applications to virtual propeller guards (sensor based guards) or to conventional boat propeller guards on our Technologies page, now titled Prop Guard Technologies

Propeller Guard CFD: Oliver Lee Thesis

Propeller Guard Design: An Investigation Using CFD. Oliver Lee. University of Sydney (Australia). November 2011. We are thrilled to welcome this Computational Fluid Dynamics (CFD) analysis of propeller guards into the library of academic research studies on propeller guards by college students around the world. We also proud to have been a small part of […]

Cushioned Propeller Guard – Senior Design Project

Marine drive companies have long employed damping / cushioning technologies to protect marine drives, most typically trim cylinder log strike systems that allow the drive to swing back, up, and over underwater obstacles. Recent years have brought several through hull drives to the market, most prominently Volvo Penta’s IPS, and Brunswick’s / Cummins Mercruiser Diesel […]

Developing a Consumer Guide for the Selection of Propeller Guards and Other Propeller Safety Devices

This propeller guard selection guide is NOT ready for use. As brightly emblazoned on our documents, they are rough drafts. We posted them to generate a discussion that could improve them as well as provide some ideas to those working on the U.S. Coast Guard’s recently announced efforts to produce a consumer guide to propeller […]

Propeller Guard Designed for Courtroom Use – Senior Design Project

The boating industry continues to reject the use of propeller guards and vehemently testifies against them in propeller injury trials. One of their tools is to illustrate ANY changes in the performance of the boat with the guard vs. without the guard and claim those changes are unacceptable. We propose a Senior Design Project, Capstone […]

Propeller Guard Drag Research Projects – Senior Design Projects

Boat propeller guards create drag which effects the performance of the boat, especially the top speed attainable at wide open throttle and time to plane. Propeller guard designers try to minimize drag by increasing the size of the mesh (make the open holes larger) and by decreasing the size of the wires / rods used […]