Boatbuilding Tips and Tricks Blog

Here are the latest few blog posts. The balance of this years, appear below the list of posts and the column on the right, the index, lists all posts since 2008 when I started this blog, over 400 posts and 9 years.



Saturday, July 14, 2018

Albion Power Dory - Best of Show in Mystic Connecticut Wooden Boat Show

Al Dettenreider from Massachusetts, recently took his homebuilt Albion Power dory to the Wooden Boat Show in Mystic Connecticut, (One of the oldest and most respected) and he ended up winning the Owner Built Power Boat "Best in Show" award. Well done Al! Shown enjoying the boat with his wife, June.

Albion Power Dory Wood Boat Plans

Albion Power Dory Wooden Boat Plans

Albion Power Dory Plywood Boat Plans

Albion Power Dory Ply-on-Frame Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: 19' Albion Pacific Power Dory Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Saturday, July 7, 2018

Pactola Driftboat Launched in Upstate New York

Andrew Hodel from upstate New York, just completed and launched his 15' Pactola Drift Boat. He posted this on his Facebook Page:

My completed Pactola drift boat build. Jeff Spira's plans are great!

Pactola Drift Boat Wood Boat Plans

Pactola Drift Boat Wooden Boat Plans

Pactola Drift Boat Plywood Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: 15' Pactola Drift Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Sunday, July 3, 2018

Quintana Wide Panga Launched in Washington

Tyson Jensen from Puyallup, WA just launched his 19' Quintana Wide Panga. He said:

Hi Jeff,

I just launched the Quintana last weekend. Still finish work to be done, but it is getting closer.

We had 4 men in the boat (about 800lbs) and we hit 38mph at about 3/4 throttle. Very stable, and good in the corners.

More to come,

Tyson

Quintana Wide Panga Wood Boat Plans

Quintana Wide Panga Wooden Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: 19' Quintana Wide Panga Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Tuesday, June 26, 2018

Yukon Drift Boat Maiden Voyage

Devin Matheson just launched his 16' Yukon Drift Boat. He says it was incredible.

Yukon Drift Boat Wood Boat Plans

Yukon Drift Boat Wooden Boat Plans

Yukon Drift Boat Easy Boat Plans

Yukon Drift Boat Plywood Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: 16' Yukon Drift Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Monday, June 25, 2018

16' Endurance Flats Fly Fishing Boat Design Addded to Site

Based on some requests from customers and some pre-buys from the insider site, I created a 16' Fly Fishing boat called the Endurance intended for fly fishing the flats and bayous along the Gulf Coast. This would be a great boat for a lot of different shallow water activities where a very easily driven, stable, shallow draft boat is essential. This boat is light, (car toppable) may be rowed or use a trolling motor, (either electric or gas) and stable for fishing, gigging, hunting, bow-fishing, or more.

16' Endurance Flats Fly Fishing Boat Wood Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: 16' Endurance Flats Fly Fishing Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Sunday, June 24, 2018

Jim Miller's Carolinian Dory in Virginia

Jim Miller, from Richmond VA, along with his father-in-law, Robert Tipton, created this very nicely built 18' Carolinian dory last winter in his garage. Almost done and ready for a mid-July launch.

Carolinian Dory Wood Boat Plans

Carolinian Dory Wooden Boat Plans

Carolinian Dory Easy Boat Plans

Carolinian Dory Plywood Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: Carolinian Dory Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Monday, June 18, 2018

William Atkinson's Seneca Dory in Louisiana

William Atkinson operating his modified Seneca Pacific Power dory in the South Louisiana bayous.

Seneca Pacific Power Dory Wood Boat Plans

Seneca Pacific Power Dory Wooden Boat Plans

Seneca Pacific Power Dory Easy Boat Plans

Seneca Pacific Power Dory Plywood Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: Seneca Pacific Power Dory Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Thursday, June 14, 2018

Tim Smith Completed the Salish Sea Rowing Event, in a Homebuilt Glousterman Stitch-and-Glue Dory

Tim Smith just completed the Salish Sea rowing competition - 70 miles in 48 hours. Great first effort in his homebuilt Glousterman dory. The landing is in Port Townsend, Washington.

Glousterman ultralight stitch and glue dory Boat Plans

Glousterman ultralight wood dory Boat Plans

Glousterman ultralight wooden dory Boat Plans

More information, plans ordering information, and free downloadable study plans of this boat may be found at: Glousterman Ultralight Stitch-and-Glue Dory Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Wednesday, June 13, 2018

17' Texan Grand Banks Dory completed in Ireland

I just got this email and pictures from Jonathon Ryan in Ireland. Here's what he said:

Hi Jeff,

I completed a Texan Grand Banks Dory recently and I am just sending on a few photos. It varies from the plans in that I raised the level of the engine well and also built a stainless steel frame with a winch For raising and lowering the outboard engine. I find this feature very useful for launching and retrieving. The bow and stern have also been decked in with watertight bulkheads. This helps a lot with keeping water out of the boat when driving through larger waves. I also put runners [2x1] timber capped with aluminium flat section 40x3 to deal with any wear on slipways.

With all the small modifications I am very happy with the boats performance.The boat is used on the south coast of Ireland.

All the best,
Jonny

Texan Grand Banks Dory Wooden Boat Plans

Texan Grand Banks Dory Wood Boat Plans

Texan Grand Banks Dory Easy Boat Plans

More information, plans ordering information, and free downloadable study plans may be found at: Texan Grand Banks Dory Boat Plans.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Tuesday, June 12, 2018

Transom Construction for Motor Size

I get this question periodically, so thought I'd clear this all up. People ask short shaft, long shaft, and so on, so I thought I'd clear up some of the confusion. Many people call 15: shaft, a "Short Shaft," and 20 inch a "Long Shaft" outboard. That may have been the case, back 50 years ago, but these days it's different. Normally, at least with the Japanese outboard builders, now pretty much duplicated by the American designs, a short shaft is 17-1/2", a standard shaft is 20-1/4", a Long Shaft is 23", and occasionally you'll see an extra long saft at 25", but the 25 inchers are generally specialized smaller motors intended as sailboat auxiliaries.

If you have a motor, new or old, your best bet is to measure it from the clamp area to the cavitation plate, as shown below:

Outboard Shaft Size

Build your transom such that the bottom of the cavitation plate is flush with the bottom of the boat. Be sure to allow for the bottom planking in this calculation. This means the framing from the bottom to the motor-mount board will be the shaft size less the bottom planking thickness.

Outboard transom flat

If you're building a V-Bottom boat, here's how you should calculate this design.

Outboard transom v

If you wish, you can lower it a bit after you test out the performance. It will never be higher, but some feel like the boats run better if they are 1/2" to 1" lower. The motor boards on my designs are amply robust to handle a bit of lowering if needed later.

A report on this along with many more boat building reports and seminars may be found in the Insider Section. Join here: Boat Building Insider Section Sign-up.

Jeff Spira, Naval Architect, marine engineer and boat designer

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Complete Boatbuilding Tips and Tricks Blog Index for 2018


Boatbuilding Pictures

Boat Building Photos

Please don't be embarrassed to send in photos of your projects. I get a lot of emails from people who tell me about their build but never send any pictures. I'd love to see them, as would all of the other people who are either building a boat or thinking about it. They need all the encouragement they can get.

I believe in offering you all the information you need to learn more about how to build a boat. That's why I offer free videos, free ebooks, and free reports. There's even some free plans available to isiders and some seminars I've delivered. To join, just click below:

Download Free Plans for the Huntington Harbor Kayak

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