PropellerSafety.com

Archive for invention

Monitoring outboard log strikes: Yamaha Patent Application

Yamaha’s U.S. patent application, “Collision Information Providing System, Collision Judging System, and Marine Vessel” was published October 12, 2023. Yamaha’s system classifies and monitors three different kinds of collisions. 1. Outboard motor / Marine drive collisions 2. Propeller collisions 3. Vessel collisions These types of collisions are monitored. They are classified. Their intensity is rated. […]

Reduce Peak Impact Force of Boat Propeller Guards

This Tech Brief explains a method that may reduce maximum impact force of some boat propeller guards striking people. This method may also: Reduce injuries caused by striking some boat propeller guards at lower speeds. Allow some propeller guards to be operated at higher speeds while causing less severe injuries to people in the water. […]

Prevent Unauthorized Operation of Rental Boats Invention

Our invention eliminates / stops / prevents unauthorized individuals from operating rental boats during the rental period, sometimes called nonauthorized operation The disclosure below of our invention to Prevent Non-Authorized Operation of Rental Boats was posted on February 8, 2022. We will make no changes to the text below the line following this paragraph except […]

OSCAR detects floating debris: avoid log strikes

The origins of OSCAR, a collision avoidance system for boats from Austria, unfolded when Raphael Biancale, a European automotive engineer and founder of the BSB Group, was returning from a 6 month sailing trip in 2013. He searched for ways a sailor could safely navigate at night. His work on intelligent systems for automobiles led […]

Sharrow Propeller wins Innovation Award

The new Sharrow Propeller won the Innovation Award for Propulsion Equipment & Parts at the 2020 Miami International Boat Show February 14, 2020. 7 Boating Writers International (BWI) members served as the Innovation Award judges committee. NMMA reported Ed Sherman, one of the judges, said of the Sharrow MX1 propeller “This is a breakthrough prop […]

Brunswick wireless lanyard patent application

Brunswick’s wireless lanyard patent application was published 30 January 2020 by the U.S. Patent and Trademark Office (USPTO). Brunswick’s wireless lanyard is made possible by the combination CANbus systems now used by boats and marine drives in conjunction with data available from the Engine Control Unit (ECU) and today’s digital controls (like digital shift/throttles). Brunswick’s […]

Sharrow Propeller receives rave review from BoatTest

Sharrow Propeller is one of many propeller developments we have followed over the years. The loudest ones sometimes turn out to be all hype focused on luring investors into an unproven technology with some big names associated with it. A few have staying power. It sounds like Sharrow Propeller may be the latter. BoatTest.com a […]

Log strike impact mapping / charting invention

Our Log strike impact mapping / charting invention disclosure below was posted on 2 March 2019. We will make no changes to the text below the line following this paragraph except to correct misspellings, punctuation, and to update html/computer codes and links. Any updates to the invention will be posted below the invention disclosure. Log […]

Boat Intelligent Warning System Invention

Our Boat Intelligent Warning System (BIWS) invention disclosure below was posted on 29 November 2012. We will make no changes to the text below the line following this paragraph except to correct misspellings, punctuation, and to update html/computer codes and links. Any updates to the invention will be posted below the invention disclosure. Boat Intelligent […]

Contrapel Water Jet

Two New Zealand inventors (Barry Davies and Paul Paterson) have spent nearly twenty years developing a contra-rotating water jet. Like contra-rotating propellers, the Contrapel waterjet uses two impellers turning in opposite directions. The original efforts were by a firm called ContraJet Ltd. After that effort stalled, it became PropellerJet Ltd. The water jet research and […]