Gunnery galley

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I'm building a galley like this. I took a drawing from the archive, now I can’t find it, it’s Holland or Sweden. The question arose about this beam - what and why. Maybe someone has encountered such a design

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bizarre arraingement on the guns.. i could understand the rear guns being on rotating mounts... but the way they seem designed, the center of rotation is on a pivot of its own, allowing the gun to move about the deck oddly..

no idea why the two forward guns would be on pivots..
 
There are a lot of constructive oddities here, it looks like this is some kind of project, which is what interested me. But here is the purpose of this beam???????!
 
as it exists in two views,, i actaully think it might be a ladder of sorts made from a thin log.. seems to be no stairs to the top of the house over the steering wheel. other wises.
 
no idea why the two forward guns would be on pivots..
So they can turn and not have to only point forward?
it looks like this is some kind of project, which is what interested me. But here is the purpose of this beam???
Looking at the rigging and pivot point it appears to be a mast that can be rotated to stand upright.
Not unlike the following "modern" barges that I found on line "built in 1923. The last one was in 1926." Consider the drawing posted above appears to be a reproduction and the drawing and information here is also probably a reproduction so they both might be fictional. Interesting design none-the-less.
Allan
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The original shows design drawings; this system of extending cannons was used by the Swedes. The mast lifting system is standard. I have a growing assumption that this is really something like a ladder used when laying spars on rostra

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If you look at the oblique view in the lower left corner, the way it attaches to the deck house suggests it is merely a stiffening member to add rigidity to the deck house.
 
If you have access to Chapman he shows several oared gunboats. I belief that they are similar to this one. The midship in particular

Btw. Really nice model.

Roger
 
Looks to me that the "beam" is the mast shown in the stepped position. The aftermost guns look like carronades, with their sliding beds being shown in the plan view.
Ted
 
I'm building a galley like this. I took a drawing from the archive, now I can’t find it, it’s Holland or Sweden. The question arose about this beam - what and why. Maybe someone has encountered such a design

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I think this link will answer all your questions...

Regards,
Lars
 
I think this link will answer all your questions...

Regards,
Lars

it does answer alot of questions, but on this ships plans, the framing for the deck housing is installed directly into ships frames like a post and beam house... other then being a hellish piece of constructing the bend, it doesnt seem needed.
 
it does answer alot of questions, but on this ships plans, the framing for the deck housing is installed directly into ships frames like a post and beam house... other then being a hellish piece of constructing the bend, it doesnt seem needed.
My guess... the rather large collapsible mast needs some kind of support, and instead of having a very basic support frame, they integrated this with a cabin to offer some (basic) protection for the helmsman and officer(s) against the elements and small arms.

The Danes used rowed gunboats against the Royal Navy during the early 1800s (Napoleonic Wars), although I think those were quite a bit smaller than the one being discussed here.

Attached are some images of period paintings depicting Danish/Norwegian gunboats attacking British warships.

And here some links for an interesting read:

Danish gunboats attacking HMS Tigress at Agersø, 1808 (Christoffer Wilhelm Eckersberg, 1808).jpg

Danish-Norwegian gunboats attacking HMS Tartar at the Battle of Alvøen, 1808.jpg

Danish-Norwegian gunboats attacking HMS Tartar at the Battle of Alvøen, 1808 (2).jpg
 
On the top image, it's interesting to see one of the gunboats with its sails deployed (on the far right)
 
bizarre arraingement on the guns.. i could understand the rear guns being on rotating mounts... but the way they seem designed, the center of rotation is on a pivot of its own, allowing the gun to move about the deck oddly..

no idea why the two forward guns would be on pivots..
I think, the reason for the double pivot-points is, that it allowed the guns to fire parallel to each other (see attached image). With both guns pointing in the same direction, it would allow for an 8-gun broadside (the 4 large guns front and aft + the 4 smaller ones along the side) when closing in on enemy vessels (possibly prior to a boarding attempt). Although, I can imagine they would probably not fire all guns simultaneously, to avoid capsizing.




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Could this “beam” be a mast similar to that used on a Piscataqua Guldalow? They would drop the mast and sail as they passed under bridges. One is in use in Portsmouth NH as an historical tourist attraction. https://www.cowhampshireblog.com/2016/07/12/new-hampshire-glossary-gundalow/

https://www.gundalow.org/the-gundalow-company/

Initially, I had the same thought. But, I wouldn't expect these rowed gunboats in areas with bridges, i.e. small rivers or city canals. My understanding is, that they would operate in nearshore waters to attack enemy ships (perhaps they were also used by privateers).
And that "beam" is most certainly a collapsible mast. My guess is, that the mast and sails were deployed to quickly take position when attacking a ship.
 
Now the question before me is whether to finish this small model or start a new one on a larger scale, taking into account the information received. According to the drawings in the drawings, there was a system of slips for placing guns in the hold, although there are questions about how this was done with the stern guns. There is a similar system on the sweden gunboat model I built, but here the question arises with a stern superstructure

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