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Old 28-12-2020, 13:49   #1
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Can anyone help me identify this type of mast / boom?

I saw this while I was job hunting in Athens, a nice Frenchman let me snap a pic of the unusual boom/mast but I wasn't too confident with my French to ask him about it :
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Old 28-12-2020, 13:57   #2
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Re: Can anyone help me identify this type of mast / boom?

Ah! the Aero rig. I have always wondered how they perform.
https://www.yachtingmonthly.com/sail...-aerorig-71482
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Old 28-12-2020, 14:50   #3
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Re: Can anyone help me identify this type of mast / boom?

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Ah! the Aero rig. I have always wondered how they perform.
https://www.yachtingmonthly.com/sail...-aerorig-71482
Thanks I found that article a very interesting read and you have satisfied an 18 month curiosity!

Would you agree with the author that the Maltese Falcon and Black Pearl are aerorigs? It seems the internet refers to them as DynaRigs which might just be a rose by any other name.

They look different to me a layman but structurally I suppose the could be the same.
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Old 28-12-2020, 18:13   #4
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Re: Can anyone help me identify this type of mast / boom?

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Thanks I found that article a very interesting read and you have satisfied an 18 month curiosity!

Would you agree with the author that the Maltese Falcon and Black Pearl are aerorigs? It seems the internet refers to them as DynaRigs which might just be a rose by any other name.

They look different to me a layman but structurally I suppose the could be the same.
Personally I wouldn't classify what Maltese Falcon and Black Pearl have as Aero rigs, they seem much more like high tech, fancy, sheet-less junk rigs, but I am not a naval architect. Structurally, I'd agree with you. What they both share in common with an Aero rig is that the rig is balanced in that sails try to windvane themselves as the junk rig does. The strain is on the mast more than the sheets; sheeting in a junk rig is very easy I understand. I have not sailed a junk rig yet but I'd love to!
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Old 28-12-2020, 18:34   #5
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Re: Can anyone help me identify this type of mast / boom?

With no shrouds the mast is probably carbon fibre. These were usually cat rig though some, like this one, added a headstay and small jib for added windward performance. Freedom yachts was a big proponent of this type of rig. They made a number different sized boats in cat, cat ketch, cat schooner and sloopish designs.
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Old 29-12-2020, 00:43   #6
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Re: Can anyone help me identify this type of mast / boom?

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With no shrouds the mast is probably carbon fibre. These were usually cat rig though some, like this one, added a headstay and small jib for added windward performance. Freedom yachts was a big proponent of this type of rig. They made a number different sized boats in cat, cat ketch, cat schooner and sloopish designs.
Hi roverhi

You're right, seems the vast majority is carbon fibre. Thanks for the contribution!
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Old 29-12-2020, 08:33   #7
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Re: Can anyone help me identify this type of mast / boom?

There are big differences between Aero rig, Dyna rig Freedom rig and junk rig. The junk rig is the simplest. The mast doesn't rotate and the sail is hauled up it in one piece. The Dynorig has rotating masts with yards on which each panel of sail is set. The junk rig has a mainsail with battens.
The freedom rig has one large fully battened mainsail hoisted conventionally (which includes in-mast furling, though I haven't seen such a rig) on a non-rotating mast, sometimes with a small jib added.
The Aerorig is a combination of two sails set on a rotating cruciform mast structure forming a single aerofoil.
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Old 29-12-2020, 09:44   #8
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Re: Can anyone help me identify this type of mast / boom?

This may be of interest
Extreme high latitude sailing and AeroRigs - Magma Structures
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Old 29-12-2020, 12:18   #9
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Re: Can anyone help me identify this type of mast / boom?

Hunter vision 32 and 36 have aluminium freestanding masts with jib.
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Old 29-12-2020, 16:03   #10
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Re: Can anyone help me identify this type of mast / boom?

Aerorig

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Old 29-12-2020, 16:05   #11
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Re: Can anyone help me identify this type of mast / boom?

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Old 29-12-2020, 16:07   #12
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Re: Can anyone help me identify this type of mast / boom?

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Old 30-12-2020, 07:37   #13
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Re: Can anyone help me identify this type of mast / boom?

Some will know of Ian Shuttleworth. This catamaran design has an AeroRig and the discussion of the design is of interest

https://shuttleworthdesign.com/52AeroDesign.html
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Old 31-12-2020, 01:23   #14
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Re: Can anyone help me identify this type of mast / boom?

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Some will know of Ian Shuttleworth. This catamaran design has an AeroRig and the discussion of the design is of interest

https://shuttleworthdesign.com/52AeroDesign.html
John
Thanks, I especially like the boom being used as a davit for the dinghy!
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Old 31-12-2020, 01:38   #15
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Re: Can anyone help me identify this type of mast / boom?

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Hunter vision 32 and 36 have aluminium freestanding masts with jib.
Such nice clean lines on these free standing masts!

The Hunter's mast is an absolute unit. I guess the extra space in the saloon is won in lieu of the forward cabins?
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