Spinnaker pole as derrick for dinghy

[jimi]

Had a thought that this might be a good idea. Attach pole to fitting on toerail, use pole uphaul to set height and angle then put sheet through jaws and attach to dinghy to lift and swing onto fordeck. Any thoughts on whether this might be a good or bad idea?

 

[sarabande]

articulation at the toerail joint might be a problem, and also friction as you pull in the "whip" (line) through the outer jaws (it will be a 90 degree bend, roughly).


What about the pole used as a derrick, with the inner end at the base of the spi track on the mast ? Angles will be kinder for the load of the dinghy, especially if you can rig a snatch block at the outer end.

 

[jimi]

articulation at the toerail joint might be a problem, and also friction as you pull in the "whip" (line) through the outer jaws (it will be a 90 degree bend, roughly).


What about the pole used as a derrick, with the inner end at the base of the spi track on the mast ? Angles will be kinder for the load of the dinghy, especially if you can rig a snatch block at the outer end.

Sounds simpler and better, I like the snatch block idea as I can then use the spinnaker halyard to support the pole end rather than the uphaul .

 

[wotayottie]

Had a thought that this might be a good idea. Attach pole to fitting on toerail, use pole uphaul to set height and angle then put sheet through jaws and attach to dinghy to lift and swing onto fordeck. Any thoughts on whether this might be a good or bad idea?

Why bother. Why not just haul it up on the spinny halyard?

 

[knuterikt]

Sounds simpler and better, I like the snatch block idea as I can then use the spinnaker halyard to support the pole end rather than the uphaul .

I would take the halyard through the snatch block and down to the dinghy.
Use the uphaul to adjust the angle (height) off the spinnaker boom.

This way you can adjust the outlay/angel of the boom independently of the height of the load (dinghy).

Remember that the load of the boom will be only compression if you get the halyard to have the same angle with the boom on both sides (half the angle), the closer you are to this the better for the boom (= no bending forces on the boom).

 

[vyv_cox]

Why bother. Why not just haul it up on the spinny halyard?

+1. We haul ours up by the painter until it clears the guard wire, swing it to the foot of the babystay, lower it partly down upside down to make a sunshade/wind scoop over the fordeck.

 

[johnphilip]

Oops

Had a thought that this might be a good idea. Attach pole to fitting on toerail, use pole uphaul to set height and angle then put sheet through jaws and attach to dinghy to lift and swing onto fordeck. Any thoughts on whether this might be a good or bad idea?

As you swing in the pole surely it will catch the guardrail?
Better as suggested to keep the pole on the mast where it is designed to be.

 

[Kelpie]

I use the pole uphaul, clipped to the grab handle on the side of the dinghy. Haul up until it;s abut to clear the guardrails, then cleat off, manoeuvre it past the shrouds and onto the side deck.
With the Avon, I can do this singlehanded; with a larger dinghy it took two of us. I inflate the dingy on its side, on the sidedeck, with an electric pump. It takes about five minutes from start to finish to get the dinghy into the water, and probably a little quicker from recovery to packing away.

I have also found out that in strong enough winds, dinghies can make quite effective kites...

 

[cliff]

Remember that the load of the boom will be only compression if you get the halyard to have the same angle with the boom on both sides (half the angle), the closer you are to this the better for the boom (= no bending forces on the boom).

?? The boom is for all intents and purposes pin jointed at each end therefore any forces will be axial to the boom and therefore there can be no bending moment apart from that created by the wieght of the boom itself. The problem arises when the conpressive forces in the boom are too high and the boom buckles (slenderness ration is applicable in this case)

 

[bobgarrett]

After pulling a muscle last year lifting outboard or tender onto the boat - still not sure whether it was the lifting the outboard from the tender up or subsequently lifting the tender - I decided we needed an easier way.
Having setup so we could detach the mainsheet from the coachroof and so swing it out over the side as a way to lift a MOB I decided the same option could be used for the outboard and then tender.
What you do need to do though is raise the boom with the topping lift or main halyard so the tender is lifted high enough above the guardrails. For MOB we'd drop the guardrail.
I am not sure about the forces involved but with our small tender reckon they are less than those of sailing. I certainly think my pole would be much weaker than the boom.

 

[FullCircle]

We hoist our Walker Bay 8 (with inflatable tubes) on a spare halyard, but I have a 4 point harness on the tender with a central stainless ring, as just pulling it up on the painter meant the stern dipped in the water when hoisted.
It leans on the guard rail as it comes over, then a quick pull to bring the boat on board, and then slack off to allow the tender to settle on deck.

 

[LadyInBed]

Why bother. Why not just haul it up on the spinny halyard?

That's what I do as well, but have thought about using the pole in the way sarabande suggests.

 

[William_H]

Spin pole for lifting dinghy

I have experimented using spin pole on a larger yacht for MOB recovery. That was promising.
You need to use a halyard from top of the mast. This will reduce the end pressure on the pole. We found actually that a pole was too long for MOB onto foredeck. You can run a loop of rope to a point inboard of the end of the pole to get correct distance out from mast.
Use the main boom for a hoist into cockpit. experiment for sure good luck olewill

 

[Salty John]

Having setup so we could detach the mainsheet from the coachroof and so swing it out over the side as a way to lift a MOB I decided the same option could be used for the outboard and then tender.
What you do need to do though is raise the boom with the topping lift or mainsheet.

This is the system we also settled on. It's important to use a halyard to the end of the boom, unless the topping lift is very strong, to give that extra height to the whole thing.

If the mainsheet is too complex or permanently attached you need to have a 'handy billy' with snap hooks on each end to hook onto the mainsheet boom bale or a strop around the boom.

Worked fine for the dinghy, never used in anger on a MOB.

 

[RupertW]

We are getting a spinnaker pole and fittings primarily to lift the dinghy and will probably use it more often for that than to pole out the asymmetric or spinnaker.

Lifting a 3m rib by halyard alone is not only v tiring for one wincher and one dinghy wrangler but is a sure fire way to bend stanchions before its high enough to swing over. The angle to mast is very different to the angle of even a small overhang over the side. Will use pole on mast spinnaker fitting then halyard through the outboard end. haven't worked out whether to hoist the rib upright, upside down or sideways yet but can experiment with that later.

 

[charles_reed]

Had a thought that this might be a good idea. Attach pole to fitting on toerail, use pole uphaul to set height and angle then put sheet through jaws and attach to dinghy to lift and swing onto fordeck. Any thoughts on whether this might be a good or bad idea?

I find it far simpler to just use the spinnaker halyard.

 

[lw395]

Why bother. Why not just haul it up on the spinny halyard?

Why not just get a tender you can lift?

 

[LadyInBed]

Why not just get a tender you can lift?

Bigger boat hence bigger tender for greater number of crew but also sails solo?
Age / bad back?
and why risk straining something when you have mechanical 'bits' that will make life easy

 

[charles_reed]

Why not just get a tender you can lift?

That would be a very light tender indeed - advancing age and all that!

 

[lw395]

I appreciate that lifting 50lb, which is what a Bombard AX-3 weighs, is not for everyone, but a lot of people seem to be getting bigger and heavier tenders which they then cannot lift shoreside. You then need a bigger motor, which then needs a bigger fuel can.
So 25kg of AX-3 and 12kg of Yamaha 2 gets replaced with a package that two adults cannot lift.
I found fitting rollers to the guardrail wires made getting the tender on the foredeck easy.
Depending on the boat, a spinnaker pole may be excessive as a derrick, but I suppose it's good motivation for getting the pole uphaul/down haul system well sorted and easy to use.
If you have a spinny halliard that can be pulled downward from 7ft up the mast, most people will be able to pull down a greater weight than they can lift at an awkward angle. It cuts out a lot of tedious winching.
A lot of race boats have a cam or clam cleat on the side of the mast, so you can 'bell ring the halliard and cleat it in one action, so nobody needs to tail the winch.
There is much to be said for a light tender which can be carried up the beach and padlocked to something. SWMBO and I can easily carry ours, she takes the bow, I lift the engine by the leg.