Is that a Gorilla On The Bridge Or Are You Just Glad To Not See Me? Intuition And The Human Element

 Accident, Bridge procedures, bridge team management, maritime safety  Comments Off on Is that a Gorilla On The Bridge Or Are You Just Glad To Not See Me? Intuition And The Human Element
Jul 282010
 

Human Element is a term often bandied about in safety circles, sometimes wrongly as a synonym for human error. Less bandied is cognitive psychology, the study of how we perceive, or do not perceive, the world around us. What it often shows is that our intuitions are dangerously flawed and the need to mitigate those hazards.

An absorbing new book, The Invisible Gorilla, by psychologists Christopher Chabris and Daniel J. Simons, is a valuable basic primer that waves big red flags for those like to believe we live in a What You See Is What You Get world. If it’ not on your bookshelf, it should be.

Chabris and Simons carried out a series of classic experiments that asked fundamental questions and got some unexpected answers.

For instance, we intuitively feel that if something outrageously obvious suddenly popped up where it shouldn’t be we would instantly see it. Let’s say it’s a video o a basketball game and your job is to count the number of times players in white pass the ball while ignoring passes made by players in black you’d obviously spot a gorilla walking among the players.

Your intuition is wrong. Continue reading »

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Nordic Express Island Strike – Two Minutes Alone Is All It Took To Make A Meal Of An Entrée

 Accident report, allision, ballast, Bridge procedures, bridge team management, Canada, grounding  Comments Off on Nordic Express Island Strike – Two Minutes Alone Is All It Took To Make A Meal Of An Entrée
May 312010
 

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In the midst of a critical turn on 16 August 2007 to take the vessel into a channel between Entrée Island and Schooner Island the OOW of the Canadian ferry Nordic Express sent the helmsman from the bridge to call the docking crew to stations. The OOW took over the helm, a position from which he could not see the radar or the Electronic Chart Display, ECS.

Over the next two minutes the OOW had problems controlling the turn. By the time the helmsman returned to the bridge the vessel was on the desired heading but on a parallel track offset to the north east and heading for Entrée Island full-ahead.

Continue reading »

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