PropellerSafety.com

Guard Technologies – Page 2

Volvo Penta Patents Virtual Propeller Guard System

On June 5, 2012, Volvo Penta was issued U.S. Patent 8,195,381 for a Safety System for Marine Vessels. The patent focuses on detecting people in the water in conjunction with digital anchors. UPDATE note – on September 18, 2012 Volvo Penta was issued another patent, U.S. Patent 8,271,155 for technologies surrounding this same concept. GPS […]

Yanmar Builds Diesel Outboard to Accept Propeller Guard

Back in 2000, Yanmar was offering a special lower leg on Model D27A and D36A outboards (27 and 36 horsepower) that came with bolt holes for installing a propeller guard. The boating industry has long claimed that all marine drive manufacturers are united in their stand against propeller guards. Drive manufacturers say their united stand […]

Animal Presence Detection Systems for Highways

Many areas of the country, including ours, are know for large animals being on the road from time to time. In our region, the problem is most often deer at dusk, just after sunset, or during the night. Many drivers become oblivious to the ever present Deer Crossing signs (often with a few bullet holes […]

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