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boatbuildlog

Ultralight Dinghy · new build

Launched

-Ripple- Ultralight dinghy from scratch build

I have been thinking about a dinghy for my boat. After looking around for a commercial built dinghy under 50 pounds, found that I may have to build it. So I ordered the PDF files from Chesapeake light craft to build the ultralight 6 foot dinghy. I am going to build it from scratch with no kit, maybe save a little bit of money in the process. Hopefully I can keep the weight under 45 pounds.

Make a book Feed The whole log, 3 entries and every photo, laid out as a book to print, bind and keep.
11
Entries
212
Hours
n/a
Written up afterwards
42
Photos
Spent
Oct 2025
Started
Interior & Cockpit 24 h Link

Painting inside

These pictures show the taping that went in for the interior paint job. A gel coat of the inside deck for more durability and scratch resistance. On the sides, I painted with almond Rust-Oleum "out of the can enamel" from Home Depot. Nothing fancy or expensive, just wanted it to work, and look good.

Interior & Cockpit 18 h Link

Seat installation.

This is when I installed the bench seat. The bottom has fillets underneath to the strong back. The front and back parts are flooded to the stern bulkhead and bow bulkhead. I was able to get a workout in during this time. Notice the white gel coat in the floor for durability and ease of cleaning.

Interior & Cockpit 8 h Link

Struck a waterline, more taping for the green accent, stripe under the rub rail.

What it cost

$848.06
$534.09
Into the boat
$313.97
Tools & gear
ItemQtySupplierCost
Chesapeake light craft digital plans One PDF file download Chesapeake light craft $89.00
Router bits 3 Amazon $58.56
Harbor freight, Palm router 1 router Harbor freight $90.94
3mm door skin plywood 2 sheets Home Depot $30.00
1/4 " sheets of birch plywood 2 sheets Home Depot $160.03
16 gauge wire steel 1 roll Home Depot $13.47
4 ounce fiberglass cloth 3 yards Amazon $21.39
Slow cure high UV resistant epoxy resin 1.5 gallon kit Fiberglass supply depot, Fort Pierce, Fl. $217.54
2" x 8" x 8' Western Cedar Plank 1 (picked up in damaged bin) half price Lowes $21.39
6 ounce fiberglass cloth 3 yards Family donation to project (free) $0.01
Non-waxed white gel coat 1 gallon Fiberglass supply depot $76.49
Rust-Oleum gloss almond enamel paint 1 quart Home Depot $18.62
Rust-Oleum gloss hunter green. 1 Quart Home Depot $18.62
Tape, paint brushes, rollers, misc. 24 n/a $32.00