spinaker halyard is it strong enough

[johnf]

Hi my children are keen on me buying a more powerful tender. I have seen an avon 340 RIB with 25hp engine. All in it weighs 200kg. We would basically be using it in calm weather. any thoughts on whether I could just winch it on to foredeck with spinaker halyard and suitable harness, or is it too heavy. Yacht is 30 year old 45 foot Hartley Fijian

 

[sailorman]

Ah Yes but wot size Halliard is it /forums/images/graemlins/blush.gif

 

[john_morris_uk]

I can't imagine the spinnaker haliard of a 45 yacht not being able to lift a tender several times 200 kg. Measure the size of the haliard and check it against the various preaking strains of line. Breaking strain of various ropes 12mm braid on braid typically has a breaking strain of 3000 kg!

 

[Phoenix of Hamble]

i'd be more concerned about sideloadings on the sheave...... but would still think that 200Kg is massively inside its safe limits...

Will be hard work for whoever's on the winch though!

 

[NormanS]

Re johnf
Please don't let them buzz round me in a quiet anchorage. I
would get them something to row.

 

[john_morris_uk]

I assume that the spinnaker haliard block and gear is also suitable sized for the boat - in which case 200 kg will be not much compared to some of the loads a big kite might put on it!

I am always hoping that children aren't allowed to drive around anchorages annoying other boats - but that wasn't part of the orginal question!

 

[Norman_E]

If you plan to put it on deck complete with that big and heavy outboard I would be more concerned about damaging the deck. You certainly will need permanently installed chocks to stop the tender sliding about, and something to secure the outboard in its tilted forward position and prevent it doing damage or being damaged. Another point, do you really want 200KG on the coachroof or foredeck? I certainly would not want that weight on the foredeck of my boat from either loading or stability viewpoints, to say nothing of its effect on the trim of the boat.

Another thought, You might launch it in calm conditions, then a swell builds up. How do you feel about standing on the foredeck trying to control that as it comes over the guardwires? I suggest you look for a smaller lighter RIB with a more modest engine.

 

[johnf]

Many thanks for all comments. Appreciate all advice. Will try and keep kids under control in anchorage. actually main time to use would be when in Marina, when we want quick day trip rather than taking the yacht out. As we are Med based there is often not much wind to sail.

 

[Norman_E]

I am Med based too but would not dream of putting anything that big and heavy on the foredeck. With the outboard attached you have to stow it upright, so what happens if you are sailing and waves fill it with water? (It would hold at least a ton of water.)

 

[tudorsailor]

I use a dinghy crane to lift my much smaller outboard off my 2.8M avon and onto the stern rail. It can lift a 15HP outboard. I then use either a halyard to put the dinghy onto the foredeck, or a block & tackle from the boom to put it on the aft deck. Wouldn't a 15HP be powerful enough to keep the kids happy?
TudorSailor