Model Boat Mayhem
Mess Deck: General Section => Tugs and Towing => Topic started by: turner on October 13, 2014, 10:39:59 pm
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Hi
My plans for this tug state "Gobbing Bollard" on the stern deck but there are no details of it.
nothing shows on a google search
many of the other burutu builds seem to have a large winch in addition to the winch positioned just forward of the tow hook
What does a gobbing bollard look like ?
Is this reasonable - if a little bit different ?
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I have absolutely no idea what a gobbing bollard is {:-{ , but here are a couple of photos of Burutu, as built by one of our club members, Peter Barlow. They may be of some use to you, or not, as the case may be :-)
Peter.
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I assume that a gobbing bollard is used to secure a gobbing rope. A gob rope is also known as a girting, girding or gogging rope (depending where abouts in the country you are). I think the correct term is a Bridle rope which is a secondary rope used to secure the main tow cable to prevent it moving sideways which can actually cause the tug to capsize.
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Thankyou gents details appreciated. think I will tone mine down a bit but keep just a little artistic license.
David
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Gog Rope in action on a model tug. One of tugmad's tugs towing at Bluewater
and on a full size tug
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Doesn't that connection to the cleat cause terrific strain. ?
ken
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I think you will find that most, if not all cleats/bollards on vessels, are usually capable of holding the full propeller power of the vessel.
That would mean that the angular pull of a line preventing an overturn would be less force than a direct full throttle pull.
'Springing off' a quay is exactly the same sort of load, a line from say the forward cleat/bollard on the quay side of the vessel, to a bollard on the quay further back than amidships will when all the other lines are let go and the power put in forward, bring the stern out and away from the quay.
This is an action regularly carried out by most vessels.
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Thank you for that info. Very interesting. It is an angular pull so the force would be less than on the big hook. (I come from the 'belts and braces' brigade) :}
Cheers
ken
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My two penny'th for what its worth I have worked on tugs that have a gob-eye abaft the post or cleat to stop the upward or outward lead of the gob rope slipping off or jamming the turns on, the gobbling eye being a nice heavy casting or just a bent 1" bar welded into the deck, the latter was on a tug I was working on and caused me to come close to depositing my guts into my pants as when I was working as stern tug going into the south west india dock entrance decided to part company with the deck and the tug being on a pull at an angle went over… and over.. and being a light boat took a sheer and the dock pier head stopped me and managed to get my stern under the tow rope and the mate managed to get another rope over the tow rope and the way was off the tow so we could jury rig the got to get the rest of the job done.. I went from being a 20 a day man to a 60 a day man in some 10 minutes…
PS hope everyone has a happy new year for 2015 and plain sailing!