Forgive my being blunt, but this is wrong, plain and simple.
Operating a tug is like riding a bike. Once you have the skills, they don't magically disappear after 60 months. It's been ten years since I rode a bicycle, but I could hop on one today and do fine. Same goes for flopping a barge.
It is ridiculous to take one's hard earned endorsement away just because they either have by choice or compulsion been working in a different segment of the industry.
I completely agree that a demonstration of one's skills is necessary, but leave that to the employer. It is insulting and crazy-making to have the
USCG arbitrarily remove an endorsement from one's "license" based on the passage of time, especially an endorsement that has gotten so difficult to obtain.
I'm currently a designated examiner. I'm the author of PMI's TOAR guidebook for DE's and MOTV candidates. I have a deep working knowledge of tugs, both conventional and harbor. But, I currently don't work on tugs, and probably won't in the near future. So as my reward for choosing to work elsewhere, I will lose both my MOTV Oceans, and my DE, based on this arbitrary rule. But I teach tugboaters at PMI and MITAGS. I am talking the talk, and walking the walk, but not on an actual tug.
"Honor the Mariner"?
Horseshit, Mr. Cavo.
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