Cangarda 1901 by KeithAug - Scale 1:24 - Steam Yacht

[FriedClams]

Catching up, Keith and terrific progress on the planking.  Very nice indeed.  Thanks for sharing the photos of the Sutton Hoo Ship.  Such an elegantly shaped hull!   

 

Gary

[Rick310]

Keith,  

as soon as I get a chance, I’ll get more pictures to you.

Rick

[Bedford]

The Sutton Hoo ship is very interesting Keith. I'm a member of Lake Macquarie Classic Boat Assoc. we are a similar bunch of  "old codgers" who build and restore classic boats but not to that scale or degree of authenticity. I think groups like that are always welcoming and happy to discuss their work.

I can definitely appreciate the amount of waste that would occur cutting their strakes that way but it's authentic.

[Jim Lad]

Thanks for all those photos of the Sutton Hoo ship replica, Keith. I've been fascinated by this ship ever since, ads a kid, I read my father's book on the original excavation. I could just never get my head around excavating a ship that basically wasn't there - just stains in the sand.

 

John

[KeithAug]

16 hours ago, Mark Pearse said:

I could see a lot of Oak, & some pine perhaps - did you find out much on the timber types being used? 

Mark - they said that the finished ship would be almost entirely oak. The rate limiting step is currently getting the oak. Apparently getting the right quality and shape is a lot more difficult than it was in AD 625. Their target was to finish it within the next 2 years although difficulties with the landlord of the assembly shed may get in the way of this. Their construction  times seem to be shorter than many of ours!

[KeithAug]

15 hours ago, Rick310 said:

as soon as I get a chance, I’ll get more pictures to you.

Rick, don't put yourself out. You have been more than helpful already. I was just wondering if you remembered.

[KeithAug]

15 hours ago, Bedford said:

I can definitely appreciate the amount of waste that would occur cutting their strakes that way but it's authentic.

Steve - They are collecting the chips, shavings and offcuts and selling them to tourists in large bags as authenticated kindling - quite expensive actually. Very enterprising.🙂

 

15 hours ago, Bedford said:

I think groups like that are always welcoming and happy to discuss their work.

Yes, it was heartwarming to talk to them. They were a great bunch, you would have felt very much at home.

[wefalck]

Talking about memories, I seem to remember a whole room being dedicated in the NMM in Greenwich to the Sutton Hoo find, where they showed a section of the boat in 1:1 of what it looked like after excavation: basically there were the imprints from the planks long gone and the remains of the iron rivets.

 

I gather if several 'old codgers' get onto the same project that cuts down construction time compared to a single beavering away in his own workshop. Preparation and fitting times for planks are not so much different whether it's 1:1 or a model.

[KeithAug]

14 hours ago, Jim Lad said:

I could just never get my head around excavating a ship that basically wasn't there - just stains in the sand.

John - I think you have to imagine it as an early experiment in lost wax casting (or alternatively a medieval child's beach holiday)😀. it is now a National Trust site but unfortunately no longer a hole. Very good exhibition though.

[KeithAug]

47 minutes ago, wefalck said:

I seem to remember a whole room being dedicated in the NMM in Greenwich to the Sutton Hoo find,

Yes Eberhard I may have seen that but I can't remember whether I am confusing it with the excellent exhibition on the Sutton Hoo site. I have been to both several times and so plenty of opportunity for me to be confused.

[KeithAug]

17 hours ago, FriedClams said:

Thanks for sharing the photos of the Sutton Hoo Ship.  Such an elegantly shaped hull!   

Indeed Gary. In fact a lot more elegant than many modern hulls - particularly on container ships which seem to me to have all the elegance of house bricks. Perhaps our ancestors reliance on oars caused them to minimise the water resistance at low speed.

[wefalck]

I gather there various constructional and hydrodyamic factors play together.

 

Modern freight carriers have a much higher L/B-ratio than these rowing boats. A long parallel midship section is not detrimental to water resistance, but rather encourages laminar flow. If you did cut out that part and stuck together the bow and stern sections, the overall shape would not be so dissimilar to that of the boats of old.

 

One can only speculate how clinker building developed and Greenhill believes that it originates in expanding dugouts by adding planks while at the same time the dugout mutes into a sort of hollow bottom plank, eventually becoming the keel. This lends itself to smooth curves in (shell-first) planking with large radii. There is strength in flexibility in this construction as we know from experimental replicas.

 

It is only with plank-on-frame construction that tight bends are possible, leading to a rigid skeleton with a shell around it (certain Dutch vernacular boats are probably the most extreme examples in that respect).

[KeithAug]

1 hour ago, wefalck said:

I gather there various constructional and hydrodyamic factors play together.

Eberhard - Yes I am aware that cargo capacity(volume and weight) v's operating cost has to be optimised more so than ever before. In consequence modern hulls must be hydrodynamically efficient. I would just like them to look more aerodynamically aesthetic as well.

[KeithAug]

More plankers progress. I have to admit I wasn't really on it this week. The workshop proved to be unusually frustrating. It felt like every time I put something down on the workbench I had to search for half an hour to find it again. It wasn't as if the bench was particularly untidy, I just seemed to be in the habit of hiding what I wanted under the thing I had just put down. Anyway for what it is worth here is the progress.

About half the hull is done but that means I have had to sort out the skeg slot in the area of the prop shaft. Because of the fineness of the lines in this area the edge of the slot is very thin and quite ragged as a result.

I decided that planking over this area might prove to be problematic, particularly as the plan is to varnish the lower hull thus precluding the use of filler to mask errors.

 

Rather than planking I thought it would be better to replace this section of the hull with a solid piece of mahogany shaped as per the pink section of the following plan.

I cut out the template and pasted it to a 3/4" thick piece of mahogany. I then cut the straight edges and drilled a hole to form the small diameter curve adjacent to the prop shaft.

I then rough cut the rest of the curve on the scroll saw, before sanding it to finished size.

I then milled the end to fit around the prop shaft. 

The next step was to gradually hack away the hull while checking the block for fit.

Once the fit looked OK I cut the slot to take the brass skeg.

The insert was then glued in place.

 

[wefalck]

Sounds like a good solution! I was indeed wondering, how you would deal with this area of the hull ...

[TBlack]

How did you manage to cut that slot so beautifully?

And to respond to this comment:

"It felt like every time I put something down on the workbench I had to search for half an hour to find it again. It wasn't as if the bench was particularly untidy, I just seemed to be in the habit of hiding what I wanted under the thing I had just put down."

 Don't beat yourself up too badly; I do that all the time, except the something is usually in plain sight!

Tom

[KeithAug]

35 minutes ago, TBlack said:

something is usually in plain sight!

That happened as well Tom.

[KeithAug]

36 minutes ago, TBlack said:

How did you manage to cut that slot so beautifully?

 

Tom - Milled it with a 2mm end mill. No skill required!

 

50 minutes ago, wefalck said:

Sounds like a good solution!

Eberhard - It felt like the simplest option.

[Bedford]

Very nice solution Keith, having the equipment and being able to see unusual ways to use it makes a huge difference doesn't it

[Glen McGuire]

6 hours ago, KeithAug said:

It felt like every time I put something down on the workbench I had to search for half an hour to find it again. It wasn't as if the bench was particularly untidy, I just seemed to be in the habit of hiding what I wanted under the thing I had just put down.

You ain't alone.  I hate to think how many hours of my life I've spent looking for stuff I just had my hands on.  

 

Regardless, superb work on some detailed fitment.

Edited yesterday at 01:28 AM by Glen McGuire

[TBlack]

5 hours ago, KeithAug said:

Tom - Milled it with a 2mm end mill. No skill required!

Ok, but you had to manage the depth of cut pretty artistically.

TB