What a bunch of bull...IMO
>>>snip
Adam Shacknai testified about working on the Mississippi River for over 28 years as a dock hand and tug boat pilot. His lawyer inquired about the types of knots he is familiar with, specifically a "clove hitch knot," "ring hitch knot," "cow hitch knot" and "lark's head knot," all of which Adam said he could not tie and did not use in his job.
From a random website outlining the responsibilities of a Dock Hand.
Dock Hand Job
POSITION REQUIREMENTS
Line handling skills including ability to tie various knots, toss, and cleat lines.
Unlimited or unimpaired ability to walk, bend, stoop, climb and work safely around water, on a ladder or in confined spaces.
Ability to lift up to 70 pounds.
Ability to use a PC and radio.
Skilled in the use of a golf cart or other motorized vehicle.
Faculty to operate small hand held and power tools.
Ability to read, write and comprehend work orders
https://www.appone.com/MainInfoReq....&SearchScreenID=6591&CountryID=3&LanguageID=2