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Archive for flipped – Page 5

Outboard Motor Log Strike Mode by Speed and Resistance to Impact Chart

When outboard motors strike submerged objects they can break off and flip into the boat as seen in our lists of outboard motors breaking off and flipping into boats and large outboard motors breaking off and flipping into bass boats. We previously posted information on several existing and proposed solutions, including The Leash, a vectran […]

Warnings for outboard motor can flip into boat

Bombardier and Mercury Marine outboard operators manuals have long warned parts of or all of an outboard motor may enter the boat after striking a submerged object. An example from the 2012 250 horsepower Evinrude E-tec manual is shown at right. A big thanks to Bombardier Recreational Products & Vehicles (BRP) for putting their operators […]

Design Chart for Preventing Outboard Motors From Entering Boats

We charted the the Design Flow Process designing outboard motors in a manner that prevents them from entering the boat after striking submerged objects. The chart was designed specifically with tournament bass boat outboard motors in mind. The chart has since been updated since it was originally posted. The most recent version is below.

Bass boat outboard motors should be fail-safe impact tested

Most major outboard manufacturers conduct a log strike test on new outboard models to prove durability. Manufacturers either test them on the water by actually running over a log of a given type, diameter, and length, or on a test stand they think simulates on water testing. These impact tests are typically conducted at a […]

New Category – Outboard Motor Broke Off & Flipped Into Boat

Numerous previous posts concerned outboard motors striking submerged objects, breaking off, and flipping into boats, preventing or mitigating those accidents, log strike systems, accidents and legal trials involving such accidents and related topics. We will now be covering this topic in this category of the PropellerSafety blog. If anyone wonders why we are covering these […]

Updated Outboard Motor broke off & flipped into boat lists

We updated our Outboard Motor Struck Submerged Object and Flipped Into Boat list today (2 May 2016). We still have many more to add to the list above plus the 2015 U.S. Coast Guard Boating Accident Report Database (BARD) will be out with more soon as well. We also updated our list of Bass Boat […]

The Leash : tether prevents outboard motors from flipping into boats

When an outboard motor strikes a submerged object at speed it may break off and flip into the boat. Outboards that flip into the boat usually do so with the engine still running and the propeller turning at thousands of RPM. Those on board can be critically injured or killed. We have long been especially […]

Boat Propulsion Impact Relief System: University of Cincinnati thesis

A few months back we came across a 2015 thesis targeting preventing outboard motors and stern drives from breaking off and flipping into boats when striking submerged objects: Boat Propulsion Impact Relief System Baccalaureate thesis College of Engineering and Applied Science University of Cincinnati Mechanical Engineering Technology Jared Frizzi 30 April 2015 We congratulate Mr. […]

USCG NBSAC 92: Our Public Comments

The U.S. Coast Guard National Boating Safety Advisory Council (NBSAC) will be holding its 92nd meeting on November 6th-8th, 2014 in Arlington, Virgina. Nonprofit Grant Comments For the first time ever, they invited public comments about non-profit grant interest areas before the meeting. Each year the Coast Guard awards nonprofits a tidy some of money […]

Bass Boat Outboard Motors Struck Submerged Object, Flipped into Boat: a List

Back in February 2012 we developed a list of outboard motors striking submerged objects, breaking off, and flipping into boats. We instantly noted a large percentage of these accidents involve bass boats with high horsepower outboard motors. We have since identified 21 occurring since February 2012, plus several earlier ones. Many of the accidents we […]