18' Plywood Runabout, Downeaster
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Join to view PDF Purchase 18' Downeaster PlansThe Downeaster 18 is arguably the all-American boat in this catalog of boat plans, the kind of craft one sees on any major body of water here-fresh or salty-or on the road heading for it. However, at least three features distinguish Downeaster from most production powerboats in the 18′ range, currently in circulation.
Particulars and outboard profile
First, we think she is much better looking. Second, she is certainly more versatile-as a hull for all waters, especially choppy ones; and in the two arrangements available (a runabout with split windshield and convertible top, or a center-console fisherman with canvas dodger).
Third, she can be built at home using standard plywood construction over sawn frames, and requiring no steam bending or complex carpentry. Moreover, WoodenBoat documented the building of a Downeaster in three successive issues of the magazine (WoodenBoat Nos. 73, 74, and 75), amounting to a virtual how-to-build workbook for this boat.
Arrangement plan
In the standard outboard runabout version, Downeaster also features full-width seats forward and aft (with plenty of open space in between), a self-bailing motorwell, and sufficient decking forward and along the sides to help keep the interior, the crew, and the day’s gear reasonably dry. Power range is 40-100 hp; a 75-hp unit can readily deliver 30 mph. The same characteristics that make the boat swift and responsive (narrow, deep-V hull) make her very suitable for waterskiing, as well. With an appropriate tow-bar setup, Downeaster will make an excellent ski boat.
The boat has satisfied these critical design criteria: handsome appearance; economy and durability of construction; and a hull form that gives good performance underway, at all speeds and in a variety of sea conditions. In addition, the Downeaster 18 is burdensome in the best sense: this boat will carry six persons-safely and comfortably.
Inboard profile
The 18′ Downeaster Runabout plans are well detailed on five sheets: lines and offsets, construction sections, a construction plan, and arrangements for both the utility runabout and center console models. WoodenBoat Plan No. 71. $90.00.
Sheer and body plans
Plan 71
DESCRIPTION
Hull type: V-bottomed
Construction: Plywood planking over sawn frames
PERFORMANCE
Suitable for: Somewhat protected waters
Intended capacity: 2-6 day cruising
Trailerable: Yes
Propulsion: 40-100 hp outboard
Speed: 26-40 mph
BUILDING DATA
Skill needed: Basic to intermediate
Lofting required: Yes
Alternative construction: None
“How to build” instructions: WoodenBoat Nos. 73, 74 & 75
PLANS DATA
No. of sheets: 5
Level of detail: Above average
Cost per set: $90.00
WB Plan No. 71
Completed 18′ Downeaster Images
George D. JepsonThe Manitou 18, a contemporary rendition of the Downeaster 18, is built by Copper Harbor Boat Works.
George D. JepsonThe runabout handles Lake Superior nicely, providing a dry, comfortable ride.
Truly a boat for all seasons!
What is the deadrise angle at the stern? I built a runabout of somewhat similar dimensions with a 75 hp outboard. We live at altitude in Colorado, usually boating at 6000′ to 9000′ altitude, and get 35 mph with my boat. My hull has a 12-degree stern deadrise; easier planning but I doubt that it handles waves as well as the Downeaster. I have always wondered if a 14-degree deadrise would have made much difference.
I have the WoodenBoat plans for “Little Moby”, a 14″ 6″ Skiff also designed by Charles Wittholz. Started building the boat in the late 80s but couldn’t finish because of a move. Decided this year to build a RC model from original plans (way overdue). I still have my original WoodenBoat magazine issues (73-75) describing the build. Beautiful, classic lines and construction methods just like the Downeaster. Great to see this beautiful example of the Downeaster.