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>> Home > Boat Building Blogs > Ketch Barge "Pearl of Ipswich"
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Ketch Barge "Pearl of Ipswich" Print Booklet
Author: Joe727   Posts: 7   Photos: 42   Subscribers: 4   Views: 460   Responses: 7   |   Most recent posts shown first   (Show oldest first)
Rudder location, blocking, fabrication - Posted: 9th Feb 2019
Looking at the proper rudder location, I added some 1/4 triangular hardwood blocking to both sides of the centerboard. Needed blocking to drill through. Was able to pickup the work board and all fit under my drill press to keep the hole plumb. Rudder post will be a 1/4 brass rod with brass tube as a bushing. See photo, brass tube in hull.

Next, I built a rudder substructure assembly which will be covered later with a wood or styrene full size rudder to fit the era. Took some very thin brass and formed it around the post, some brass plate and soldered as seen in photos. Brass heats up and solders well using my soldering station.

Attached Photos - Click To View Large
Simple Building board - Posted: 9th Feb 2019
Hello, Photos attached show my quick inexpensive building board. All I needed was a lightweight, movable board that I could clamp to.
I had a scrap of tempered hardboard about 35" x 16, so I cut two strips from it at about 2" wide from it and used them as legs to keep the thin top flat and straight. Then took some scrap wood pieces as a method to glue and secure. Result was a little table that I could clamp to. Hope this makes sense, but point is work with what you have, I considered a trip to the lumber company for wood, glad I didn't.

Attached Photos - Click To View Large
Clamp Chaos - Posted: 8th Feb 2019
Hello, It's been a slow week as I started out having some teeth pulled, put me off track so I missed getting some photos. I will get some better shots of what the keel board looks like once I get some clamps out of the way. I will photo how I do the last four ribs as well. Photos show my makeshift board with clamps everywhere. Joe

Attached Photos - Click To View Large

Response by steve-d on the 9th Feb 2019
I'm assuming this will be a planked hull in which case would it not have been better to build the hull upside down?

Response by Joe727 on the 9th Feb 2019
You are quite right, I intend to flip it over, build some jigs, when it's time to do the hull "planking". My methods are to experiment along the way on a Build, try different ideas along the way. Decided that I first wanted to build a very straight, rigid keel with stern and bow ribs first. That's why the build board is just a lightweight flat straight surface, I figure out how to clamp it best as I go. Your interest and comments are appreciated, it made me think more about the planking, thanks! Joe
Keel - Posted: 4th Feb 2019
Printed out the frames /ribs drawings and outlined each in orange so I could easily see the correct lines. Cut those out and pasted to some plywood. The plywood is Baltic Birch 1/4" -5 ply, very nice quality that I get from a local woodworking supply store. It's a bit nicer than from the local warehouse hardware lumber yard, but that would work also. Used some spray rubber cement, sprayed only the paper back and stuck on the plywood. Spraying just one surface allows quick removal of the paper once cut.

I don't have a bandsaw of scroll saw, so I use a sabresaw/hand jigsaw mounted upside down on a surface that secures to my drill press. Works pretty good. My shop is so tiny that I just don't have a space for larger tools. Maybe someday.

Keel board was glued up, will show more tomorrow on that.

Attached Photos - Click To View Large

Response by mturpin013 on the 4th Feb 2019
Where there's a will there's a way Joe, Well done keep up the good work.
Planning Ahead - Posted: 3rd Feb 2019
Spent the last two days studying the barge design and planning the build. First I scanned the small book-page size images, then with my laptop I cropped them into separate smaller images to my chosen scale. I cut, align and tape them, assemble an image that is to the size of the build. In the past I would use the local print shop and just enlarged on their large roll printer. It added up to a lot of money as they are about $7 a shot, with mistakes made it cost too much. Now that I am retired I pinch those pennies much tighter. This was more time consuming but is very accurate.

Next I sketched out the keel board shape, colored up as seen in the photos. Sketch out an idea to accommodate the bulb keel that I intend to add. This one is to sail on Sunday's at the pond, so I will do my best to engineer to sail well.
Cheers Joe

Attached Photos - Click To View Large
Determine Scale / Ribs / HELP with building board ideas? - Posted: 1st Feb 2019
To clarify this build, it will be a RC Sailing Boat with full functioning rudder and sails. I say this as I am using the PEARL for its design overall, but as to detailed historical details it will have some, but be simplified.

Boat's Dimnsions were shown in Imperial, 21' width x 85'-6" length. The bowsprit adds about another 25% in length. To determine what scale I wanted to build in I thought most about storage, weight to lift and how to transport to the pond. I like to keep things simple, I prefer to rig it and transport while assembled, with the topsail mast dropping and the bowsprit retracted. Have done this before and it has worked well for me.

Looking at potential scales and finished sizes.
* 3/4" or 1/18 scale would be 16" x 64"
* 1/2" or 1/24 scale equals 10.5" x 42.75"
* 3/8" equals 8" x 32"
I prefer a larger bout in length as it is easier to get to sail correctly, at least in my experience. Anything under 32" get tricky. I like the 64" size, but with bowsprit will be about 88" LOA. This will be a little too large for my vehicle. I decided to go with 1/2" scale as it will still be a good length hull.

Ribs - I took the hull line drawings from the book, which were very small, just about an inch wide. I scanned the image and using the app "paint" on my laptop. I cropped it close around the hull rib drawing, I then enlarged it to 1/2" scale. Then I printed on standard letter sized paper, then mirrored the image cut them in two, pasted up as seen in the photos to show the completed rib sections.

Next I will put together a building board / hull jig. I want to build bottom up for planking. DO any of you have any good ideas for the best one to build? I have never done this except for tiny boats.

Ideas, Help would be appreciated. Joe

Attached Photos - Click To View Large
Ketch Barge "Pearl of Ipswich" - Posted: 31st Jan 2019
As I have mentioned before, I like the workboats from the age of sailing. The sailing barges caught my interest some time ago on one of my stays in the UK and I recently purchased a number of books on them. Interesting history, more to it than I realized. Finally decided to build a Ketch Barge that is categorized as a Boomie as well. Several reasons; I wanted to model one of the larger ones, this one is 85', and I like gaff rigged boats with booms. Topsails a must as well and I like ketches. This one fits the bill and who could resist the chance to set 7 to 8 sails!

Frank Carr's book tells the story of the barge Pearl and included plan, elevation, lines and sail plans. Nice bit of information, I can build with that. See attached photos. This will probably be a lengthy build, my Falmouth Gaff-rigged Cutter took me two years. I built that one while on assignment in Grand Cayman using only my small kit OD hand tools. More to come, hope to start this week. Cheers, Joe

Attached Photos - Click To View Large

Response by mturpin013 on the 31st Jan 2019
I look forward to seeing the build Joe
Response by Joe727 on the 31st Jan 2019
That's very interesting - your Pearl, I assume you meant the real, full scale one..? What kind of barge was it?

Thank you for your interest, Joe
Response by Joe727 on the 1st Feb 2019
Michael, Thanks for the interest, I hope I can keep up with your high quality of work. Joe