Lifting 350kilos

Rberrow1 said:
I have a Fastworker 19 workboat and have access to a contract to drop and recover moorings with weights up to 350kilos. Need a way of getting them on and off boat safely.
These are my 2 options at the moment


2000LB Swivel Truck Crane (900kg)

This will do up to 900kilos but am worried about lifting from alongside boat as is more unstable


https://img.nauticexpo.com/images_ne/photo-m2/63904-11356801.jpg

Other option is an A frame style like this but probably without hydrolics

Any more options let me know
Both will need some changing and engineering which I’m willing to do
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If you google fast worker for sale , there is one in holyhead with a winch and spencer and carter power pack but it does not say what it can lift , good luck.
 
Judging by the length of the arm and the scantlings not more than 100kg, although even at that it's going to have it heeled right over with the arm swung out.
 
Rberrow1 said:
I have a Fastworker 19 workboat and have access to a contract to drop and recover moorings with weights up to 350kilos. Need a way of getting them on and off boat safely.
These are my 2 options at the moment
Click to expand...

This document has some useful information on what standards you will need to work to use when doing your stability calculations and design:
https://assets.publishing.service.g...9/Workboat_Code_IWG_Tech_Std_14-06-09-sgs.pdf

As others have suggested, it seems almost inconceivable that you could have lifting equipment fitted that would pass certification and also be capable of lifting the loads that you need. I would also suggest that you need to consider lateral loading if laying/ lifting moorings in anything other than still weather with no tide. In this case, the potential maximum load could be well in excess of the mooring weight and acting with quite a high lever. I would want to be confident that the crane would fail before the heeling force on the boat became dangerous.

I would agree with other comments that eliminating the need for lifting gear is your best option for getting something that is safe/ insurable for commercial work.
 
@Rberrow1 you are doing the same as what so many others on here have done before you, where you ask for help and / or advice.
In response, opinions are freely given telling you that it is a crazy idea, yet you are already in denial, and trying to justify your proposal as being workable.
Please - listen to and take heed of the sound advice given above - you do not want to be working anywhere near the margins of stability or safety on a job like this.
 
Damn is it April 1st already? Just back the chain truck on board...

Seriously though, albeit not recently did a lot of wind farm work and especially surveys. The vessel was considerable bigger and had a hyab, it was rated at 450kg but down to 200kg at full extension - but even that struggled with some equipment. Also certified independently along with all the shackles, cables and lifting strops, etc.

The wind farm companies will (I'm sorry), laugh at you and the MCA and your insurance company will likely take a very dim view.

W.
 
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Bajansailor said:
@Rberrow1 you are doing the same as what so many others on here have done before you, where you ask for help and / or advice.
In response, opinions are freely given telling you that it is a crazy idea, yet you are already in denial, and trying to justify your proposal as being workable.
Please - listen to and take heed of the sound advice given above - you do not want to be working anywhere near the margins of stability or safety on a job like this.
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Exactly. Anyone who was competent to do this wouldn't be asking dumb questions - on what is essentially a leisure boating forum!
 
seastoke said:
What you need to understand that every piece of lifting equipment , that has been designed and buit , has to have been certified by someone who can issue a loller certificate , with a safe working load proven , then has to be tested every 6 months . if iam correct.
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I just read this and was concerned that Someone that bid for and was awarded such a contract was asking such a question. Like others have said that is far to small a boat to do that sort of work. The one that services our moorings is a Hauge barge thing with a proper crane. As Bruce k said if the mooring is in mud it would be a huge pull. and as for the wave action....... Scary that suck a person was awarded this contract
 
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