6 streak plywood coble design

[Peerie Maa]

^ LOL...wheres the damn like button? Surely one can be considered to "work" off a beach, even if going fishing with a rod and reel? I dont think Nick had commercial fishing in mind.

Certainly not in a 16foot boat. She has about the same working space as my Peerie Maa at 18 foot over the stems. I could probably work a few crab pots, if they were the folding pattern made from bed angle and iron rod that my family fished out of Margate, perhaps a dozen or so. Hardly a commercial venture.

[Peerie Maa]

Another coble designed by a naval architect
Selway Fishers Fly Fishing Coble.
Pictures from a FB post


This is the Scottish fly fishing coble, similar to te Scottish Salmon coble

[Chippie]

Now that is more like it Nick the question is did the Naval Architect build it, if so I congratulate him/her.

Is there a photo of it completed?

[Peerie Maa]

http://www.selway-fisher.com/Rowskiffs.htm#HIN

That one in build by Miles Tandy.

[Jim Ledger]

It's a shame to see you resting on your laurels, Nick, when you could be leading us down paths yet unexplored. Such a tease you are!

[Peerie Maa]

It's a shame to see you resting on your laurels, Nick, when you could be leading us down paths yet unexplored. Such a tease you are!

Peerie Maa needs work.
The model was built as it would be full size for proof of concept for the build, I already have the calculations to know that the weight, buoyancy tanks, and hydrostatics are good. As discussed the rudder is the only grey area, but easy to fix.

[Jim Ledger]

Cast your bread upon the waters, Nick. Find a suitable bridegroom, bless Peerie Maa and give her away. Unencumber yourself and make room in your life for a new boat... a better boat.


Jim

[Peerie Maa]

Better? Better? What is wrong with Peerie Maa pray, apart from old age?

She sails as well you know.

[Jim Ledger]

Mebbe it's me, Nick, but I've never built one thing that, after finishing it, I couldn't help but think I could build a better one next time.


It's a curse.

[Peerie Maa]

Mebbe it's me, Nick, but I've never built one thing that, after finishing it, I couldn't help but think I could build a better one next time.


It's a curse.

it must be a curse Jim, especially as you could only build different, but not better.

[heimlaga]

Take good care of Peerie Maa!

Judging by her lines I think it would be hard to find a better boat in her size. I took part in shifting 3 bottom planks and the keel in a traditional doubleender and it was a lot less work than building a new one.


One more thing....... call me backward if you want....but why an outboard in a coble? It is a lot easier to protect the propeller of an inboard engine and with a largerly unprotected propeller the whole coble concept seems to loose it's point......or?

[Jim Ledger]

Come on, Nick. For ten years you've been telling us how to better build our boats without ever having once pushed that fancy plane of yours in anger.

Now's your chance to lead from the front!

[Peerie Maa]

Take good care of Peerie Maa!

Judging by her lines I think it would be hard to find a better boat in her size. I took part in shifting 3 bottom planks and the keel in a traditional doubleender and it was a lot less work than building a new one.


One more thing....... call me backward if you want....but why an outboard in a coble? It is a lot easier to protect the propeller of an inboard engine and with a largerly unprotected propeller the whole coble concept seems to loose it's point......or?

That tunnel stern and engine well puts the propeller in exactly the same place as a prop on a shaft, without the need of a shaft log, stern tube and bracket.

[Peerie Maa]

Come on, Nick. For ten years you've been telling us how to better build our boats without ever having once pushed that fancy plane of yours in anger.

Now's your chance to lead from the front!

Been there, done that. I have reframed Peerie, put in new shear strakes and everything above the shear.
Put a lot of new wood in this, as well as making those square loomed oars

[Jim Ledger]

It's no good doing the work and posting a photo after the fact. We need threads, man!

That is a sweet pulling boat, though. Nice looking oars as well!

What's up with the big grumpy-looking bugger with his finger out?

[Peerie Maa]

It's no good doing the work and posting a photo after the fact. We need threads, man!

That is a sweet pulling boat, though. Nice looking oars as well!

What's up with the big grumpy-looking bugger with his finger out?

This is a boat building thread, just at 1:1/16th scale

Asking a question. It was so long ago I can't remember what about though. She is a nice skiff, built by Borwicks of Windermere as a Park Lake hire boat in about 1953.

[Chippie]

Take good care of Peerie Maa!

Judging by her lines I think it would be hard to find a better boat in her size. I took part in shifting 3 bottom planks and the keel in a traditional doubleender and it was a lot less work than building a new one.


One more thing....... call me backward if you want....but why an outboard in a coble? It is a lot easier to protect the propeller of an inboard engine and with a largerly unprotected propeller the whole coble concept seems to loose it's point......or?

1963 I used an outboard purely to save space for salmon netting.

There really s no need for all this rigmarole that Nick keep raking up.

A simple 7x3 inch slot through the ram plank a box to clamp the motor to strengthen by attaching to a thwart.

Simples!

[Chippie]

Come on, Nick. For ten years you've been telling us how to better build our boats without ever having once pushed that fancy plane of yours in anger.

Now's your chance to lead from the front!

Jim the same thought has passed through my mind about your own threads only I was too polite to mention it.

Apart from 2 videos on Utube, which weren't impressive at all, we only see the completed versions in your threads anyone could be making them.

It's no good doing the work and posting a photo after the fact. We need threads, man!

[QUOTE=Jim Ledger;5289469]

[skaraborgcraft]

I didnt see John Harris getting all this grief when he put an outboard well in a dory. Its no wonder he does not post here, and gets his design suggestions from customer feedback than so called knowledgable traditionalists.......

[Chippie]

^
I would call it "constructive criticism. Old Boy.

[skaraborgcraft]

^ Did you have any constructive criticism when the car was taking over the horse and cart? Times change and outboards are a usefull means of propulsion. Paul Fisher uses a well in his Coble adaptions.



Perhaps the people building these lightweight plywood models based on the looks of a Coble, do not intend to do any kind of fishing at all?

[Peerie Maa]

Paul Fisher uses a well in his Coble adaptions.



Perhaps the people building these lightweight plywood models based on the looks of a Coble, do not intend to do any kind of fishing at all?

Although Paul Fishers boats look like excellent sailing dinghys they have a shallow forefoot and little of the form that makes an English coble a coble. Saw off the raking stern and it would just be another sailing dinghy.
I read that the Drascombe Lugger

was also loosely modelled on the coble.

[skaraborgcraft]

^ True, he may well have seen that deep fore foot as a hinderance rather than an asset for most potential builders. Certainly more aimed at the leisure market. Given as Chippie point out, the hundreds of years of development, when does the development stop? Did the Coble meet its peak-performance in the latter half of the last century, or is there still improvements that can be made. I think much can be down to an individual user to decide. Much like Beer Luggers working off a specific beach, sometimes a design will come to an eventual peak......but materials change.
I would love to build a traditional Danish beach pram, but its weight, and build do not make it suitable for regular trailing or long periods sat on a trailer. I see little wrong with adaptations in the spirit of the original boats.

[Peerie Maa]

I think that the development of cobles will diverge, if they continue to be built. Those working from harbours where they lay afloat will lose the deep forefoot, if they work nets that make the tumble home beneficial for bracing your thighs whilst hauling they may survive, otherwise there is no reason that they will not be replaced by conventional square sterned motor boats.
At the landings where they work off a beach, like Flamborough and Filey the tunnel sterned deep forefoot form is still ideal, so they will probably hang on whist they can be kept going, although at Filey they are also using flat floored double enders.
The historian in me gets a bit ticked off when the pleasure boat market hijacks a name from an historical boat design and applies it to a new design that may have a passing similarity, but really is a long way from the type.

[Chippie]

^ Did you have any constructive criticism when the car was taking over the horse and cart? Times change and outboards are a usefull means of propulsion. Paul Fisher uses a well in his Coble adaptions.


@#52
1963 I used an outboard purely to save space for salmon netting.

There really s no need for all this rigmarole that Nick keep raking up.

A simple 7x3 inch slot through the ram plank a box to clamp the motor to strengthen by attaching to a thwart.

Got the tee shirt 54 years ago, and I wasn't the first by any means.
Planking a tunnel is an unnecessary clinging to old methods that should have been dispensed with in the 60's.

Not old enough to remember horses being eclipsed by cars, but if that was true am I denied an opinion, especially one that is based on experience?





Perhaps the people building these lightweight plywood models based on the looks of a Coble, do not intend to do any kind of fishing at all?

Neither do they intend to build full size in the majority of cases, it is a practical vent for suppressed dreams, nothing wrong with that

[skaraborgcraft]

I am glad that we all accept that we can have an opinion, i think that should extend to building a boat how you want. Practicaly speaking, i think the tunnel stern allows the engine to remain lowered while beaching, where as a hole in the ram plank would require the engine to be lifted, unless you had deep skorvels that grounded before the prop? Did you have to raise your engine while backing into the beach Chippie?

[Chris Noto]

A lovely thread! So glad I found it. Thanks to all y'all who contributed to it.

[Peerie Maa]

I am glad that we all accept that we can have an opinion, i think that should extend to building a boat how you want. Practicaly speaking, i think the tunnel stern allows the engine to remain lowered while beaching, where as a hole in the ram plank would require the engine to be lifted, unless you had deep skorvels that grounded before the prop? Did you have to raise your engine while backing into the beach Chippie?

I think from discussion on an older thread that Chippy fitted bigly deep scorvels. IIRC his coble was a 20 footer that could stand it.

A lovely thread! So glad I found it. Thanks to all y'all who contributed to it.

No Wukkas!

[Peerie Maa]

http://forum.woodenboat.com/showthread.php?151143-Small-East-Coast-Coble
What is preventing you from building those two boats you mention on that thread?

If I send you the plans, you could build them.

Can't promise that Nick for reasons you are aware of, but thank you.

Perhaps you could post them on another Thread and we can all subject our comments?

I reworked that 18' version down to this design.
Here are some of the missing photos
6 strake coble_Linesplan.jpg
Project : 6 Streak coble
Designer : N P Miller BSc C Eng MRINA
Filename : C:\Program Files\freeship\6 strake coble.fbm

Design length : 17.000 ft
Length over all : 16.999 ft
Design beam : 5.500 ft
Beam over all : 5.548 ft
Design draft : 1.079 ft
Midship location : 8.500 ft
Water density : 65.016 lbs/ft^3
Appendage coefficient : 1.0000
Volume properties:
Displaced volume : 19.064 ft^3
Displacement : 0.553 tons
Total length of submerged body : 14.374 ft
Total beam of submerged body : 5.261 ft
Block coefficient : 0.2336
Prismatic coefficient : 0.5375
Vert. prismatic coefficient : 0.3451
Wetted surface area : 59.335 ft^2
Longitudinal center of buoyancy : 9.222 ft
Longitudinal center of buoyancy : -0.818 %
Transverse center of buoyancy : 0.000 ft
Vertical center of buoyancy : 0.839 ft
Midship properties:
Midship section area : 2.467 ft^2
Midship coefficient : 0.4345
Waterplane properties:
Length on waterline : 14.374 ft
Beam on waterline : 5.261 ft
Waterplane area : 51.187 ft^2
Waterplane coefficient : 0.6769
Waterplane center of floatation : 8.271 ft
Y coordinate of DWL area CoG : 0.000 ft
Half entrance angle of DWL : 21.086 degr
Transverse moment of inertia : 82.649 ft^4
Longitudinal moment of inertia : 556.54 ft^4
Initial stability:
Vertical of transverse metacenter : 5.174 ft
Transverse metacentric radius : 4.335 ft
Longitudinal transverse metacenter : 30.032 ft
Longitudinal metacentric radius : 29.193 ft
Lateral plane:
Lateral area : 7.414 ft^2
Longitudinal center of effort : 11.611 ft
Vertical center of effort : 0.713 ft
Hull characteristics above waterline:
Lateral wind area : 37.145 ft^2
Z coordinate of wind area CoG : 2.274 ft
X coordinate of wind area CoG : 8.986 ft
Distance from wind area CoG to DWL : 1.115 ft
Distance from bow (FP) to wind area CoG : 7.620 ft
Minimal board height over DWL : 1.449 ft
Minimal board height over DWL : 8.523 %Lmax
Bow quarter.jpgStern quarter.jpgTunnel.jpgReady to go.jpg

[Chippie]

Nick the oars are deployed wrongly, they should be changed to opposite sides to ensure that the "blade" when pulled is supported by the "bile" This was all pointed out to you In a previous Thread.

http://forum.woodenboat.com/showthread.php?237496-pilot-coble

[Chippie]

Has the format been changed?
Peviously I sent the link and it was accessed immediately.

[Peerie Maa]

Nick the oars are deployed wrongly, they should be changed to opposite sides to ensure that the "blade" when pulled is supported by the "bile" This was all pointed out to you In a previous Thread.

http://forum.woodenboat.com/showthread.php?237496-pilot-coble

That photo is over two years old, it pre-dates your linked thread by nearly a year. No pint in retaking the photo now.

[amish rob]

Yea! More of this crap.

Peace,
MINE’S Bigger...

[Chippie]

I apologize Nick.
I was thrown at first, thinking funny I missed that first time around without commenting, and then I read "Here are some of the missing photo's" on your submission.

The apology extends to you also Amish for having the temerity to comment.

[amish rob]

I apologize Nick.
I was thrown at first, thinking funny I missed that first time around without commenting, and then I read "Here are some of the missing photo's" on your submission.

The apology extends to you also Amish for having the temerity to comment.

Do as you please. The nattering between you two drags, though.

Peace,
Zzzzzzzzz