GUNBOAT Dismasting

[GoingWalkabout]

Originally Posted by EllisElectric

I read a lot of these post, nobody mentioned the dismasting of Pheado Gunboat 66 awhile ago. People were saying then the stock mast wasn't capable of Grand Prix racing, much less storm ridden water sailing">blue water sailing.

Wow. That's serious stuff. No worse all we have heard is a lot of non specific info from the crew and the boat builder. I would love to read more on the previous Gunboat dismasting.

[44'cruisingcat]

Originally Posted by EllisElectric

I read a lot of these post, nobody mentioned the dismasting of Pheado Gunboat 66 awhile ago. People were saying then the stock mast wasn't capable of Grand Prix racing, much less storm ridden blue water sailing.

"People" say all kinds of stuff. Especially on the internet. Some of them might know what they're talking about, but it seems an awful lot have no idea whatsoever.

[Polux]

Originally Posted by EllisElectric

I read a lot of these post, nobody mentioned the dismasting of Pheado Gunboat 66 awhile ago. People were saying then the stock mast wasn't capable of Grand Prix racing, much less storm ridden blue water sailing.

The photo of Phaedo with the broken mast was posted on this thread. Maybe you thought it was the Gunboat 55, the one we are talking about?

Here is a video with photos:
https://vimeo.com/70368324

..

[GoingWalkabout]

Originally Posted by Polux

The photo of Phaedo with the broken mast was posted on this thread. Maybe you thought it was the Gunboat 55, the one we are talking about?

Here is a video with photos:
https://vimeo.com/70368324

..

It is understood that the Phoebe was a 66 foot Gunboat. But a Gunboat nonetheless. One catastrophic Gunboat dismantling is an accident. Two Gunboat dismastings is a trend. And given the percentages against how many Gunboats are out there if it were a car it would be being recalled.

[Geekatlrg]

Originally Posted by Going Walkabout

It is understood that the Phoebe was a 66 foot Gunboat. But a Gunboat nonetheless. One catastrophic Gunboat dismantling is an accident. Two Gunboat dismastings is a trend. And given the percentages against how many Gunboats are out there if it were a car it would be being recalled.

gunboat phaedo designed by Morelli and Melvin 66ft built in South Africa with a PBO rigging

gunboat Rainmaker designed by Nigel Irens 55ft built in North Carolina with a Hall Spars rigging

So here we have two boats build on two different continents, with different designers, different rigging manufactures, built 10? Years apart the only two things they share are the name gunboat and they each lost a mast.

but yet you still trollolol

[Geekatlrg]

Originally Posted by Geekatlrg

built 10?

5 years my bad..

[Sand crab]

Phaedo was dismasted during the Transpac which is the real deal. That cat did 427 miles the day before. The mast came down in mellow conditions the next day but I would say that it was "well used".

I don't get the comparison to the GB55.

https://feelinknotty.wordpress.com/2...2013-transpac/

[Seaslug Caravan]

Originally Posted by Geekatlrg

So here we have two boats build on two different continents, with different designers, different rigging manufactures, built 10? Years apart the only two things they share are the name gunboat and they each lost a mast.

but yet you still trollolol

All built for the same customer, with the same agenda,( to build a fast , read light, with minimum SF's, performance orientated catamarans.)

Its not just mast failures, PJ has commented on GB bulkhead and rudder failures as well.

Advertising the GB 55 wave piercing glasshouse, as a high lattitude cruiser is fanciful.

The problems are greater than simply mast failure.

[Polux]

Originally Posted by Geekatlrg

gunboat phaedo designed by Morelli and Melvin 66ft built in South Africa with a PBO rigging

gunboat Rainmaker designed by Nigel Irens 55ft built in North Carolina with a Hall Spars rigging

So here we have two boats build on two different continents, with different designers, different rigging manufactures, built 10? Years apart the only two things they share are the name gunboat and they each lost a mast.

but yet you still trollolol

That is not that simple. Most builders, respecting minimum charges given by the NA have a say in what regards rigging. Normally the brands have a rig specialist that have a part on rig design. Even in what regards NA the rigging is dealt not by the main NA (that give the general indications) but by a rig specialist and certainly the mast brand is chosen by the builder even if that has little to do with the type of rig design.

Regarding the Gunboat 66 and the Gunboat 55 both use the same type of diamond rig. The Gunboat 66 has a beefier rig supported by two shrouds by side (being one of them slightly lower) instead of a single one on the Gunboat 55 (that was no lower shrouds):







Curiously on the boat designs the Gunboat 55 has a rig with a lower shroud. Probably the NA original rig design. Maybe they should have stick to it.





Gunboats have been racing in S Martin with lots of wind and no problems on the masts:

https://vimeo.com/121524597

But just look at the slack of the shrouds that are not in tension by the wind: Frightening.

[barnakiel]

Originally Posted by Polux

(...)

But just look at the slack of the shrouds that are not in tension by the wind: Frightening.

Something is bending then. The bridgedeck is too soft or the hull/deck joint flexes. Etc.

I am not sure who wants slack rigging in bumpy ride.

b.

[beiland]

Originally Posted by Polux

Regarding the Gunboat 66 and the Gunboat 55 both use the same type of diamond rig. The Gunboat 66 has a beefier rig supported by two shrouds by side (being one of them slightly lower) instead of a single one on the Gunboat 55 (that was no lower shrouds):

Curiously on the boat designs the Gunboat 55 has a rig with a lower shroud. Probably the NA original rig design. Maybe they should have stick (stuck?) to it.





Gunboats have been racing in S Martin with lots of wind and no problems on the masts:

https://vimeo.com/121524597

But just look at the slack of the shrouds that are not in tension by the wind: Frightening.

Interesting observation about those additional shroud(s) on the original design by Nigel, verses the vessel as built?

On a couple of those posted drawings, do I also detect some sort of third, lighter weight shroud coming from just under the lower spreaders??

Slack leeward shrouds on 3-point catamaran rigs is 'normal'.

I will say these Gunboats must be exciting boats to sail, and look like excellent performers, considering they are cruising vessels with lots of accommodations.

[Polux]

Originally Posted by beiland

..
Slack leeward shrouds on 3-point catamaran rigs is 'normal'.
..

Yes I know that some slack is normal but just look at the video between min 1.36 and 1.38. Is that level of slack normal on this type of rig? I noticed that other Gunboat models have some slack (that one seems normal to me) but nowhere close to the slack we can see on the Gunboat 55...and not even on very demanding conditions.

https://vimeo.com/121524597

I would like to see that rig under "pumping" circumstances with the boat going fast upwind on short steep waves of considerable since. The slack should be huge on those circumstances

[beiland]

On a rotating rig of that height, I would call that just about normal,...maybe just a little loose. But rotating rigs need slack at their mast attachment point to facilitate mast rotation without excessive 'binding'.

Did you also notice the slack leeward shroud on 'Tiger Lily" (another Gunboat model) at about minute 2:22

[transmitterdan]

Some of the video shows the leeward shrouds a bit loose. Are we sure the few frames with the really floppy leeward line is not simply an unused halyard?

[Polux]

Originally Posted by transmitterdan

Some of the video shows the leeward shrouds a bit loose. Are we sure the few frames with the really floppy leeward line is not simply an unused halyard?

No, it looks like a halyard but it can't be: The boat has only a shroud and on the video (min 1.35) you can see clearly that there is only one line going up to the mast. It shakes like a halyard but it is a shroud.