Low Tide

Yacht Designer Tad Roberts' Web Log

Current design

Aluminum Tug Cruiser, T-Cup; a new design

T-Cup A 25’ Aluminum Power Cruiser LOA = 25’3” LWL = 24’0” Beam = 8’6” Draft = 2’7” Displacement to DWL = 6500 lbs Power = Yanmar 3Y30 Diesel Cruising Speed = 6.5-7 Knots Construction Plans and patterns = $750.00 T-Cup is a family cruiser in the “Tug-type” style. This boat is far closer to[.....]

Berry Point 26 Launched and Running

I’m very pleased with the little movie of the Berry Point running along. Her owner builder was the instigator in the creation of this design starting in 2006 on the Wooden Boat Forum. Perfect Powerboat Thread from WoodenBoat Forum

Nomad 16′ sea trial

I don’t get to attend sea-trials much anymore. I miss them. After the initial worries of “will it sink?”, “is anybody happy?”, and “How heavy is she?” the trial run is just fun and interesting direct feedback. Mark Reuten, builder, and Mark Brown, owner of the first Nomad 16, entered her in the 2012 Victoria[.....]

Fritzi Ann and the Stability of Fishboats

The picture above is the Fritzi Ann as she was built in 1969 by Harold Remmem. Nice looking boat. Seaworthy looking boat. With some study we can see her relationship to the smaller (42′) sisters discussed in my earlier post on Remmem Boatworks. At approximately 52’10” overall the Fritzi Ann is (as far as I[.....]

The Real Weight of Powerboats

There is currently a moderate amount of interest by both designers and consumers in lighter weight (displacement) powerboats. The sketch above is a 11,000 pound displacement 35′ boat. At this weight she can just manage a top speed of 12 knots (in flat water) with a single 60HP outboard, burning 6usg per hour, roughly 2[.....]

The Typical Powerboat is Not Seaworthy

The typical production powerboat is far from seaworthy in even slightly adverse conditions. Above is a Cooper Prowler 42′ which is typical of boats intended to sell at boatshows because of impressive interior volume. These boats are huge inside for their length by being high off the water and beamy, both detrimental to seaworthiness. Note[.....]

The Hybrid Myth, Greenline 33

More Hybrid Myth…… The Greenline 33 claims to be “Green”, claims to require far less fuel than typical cruisers, and claims to be especially efficient with their “patent pending” Super Displacement hull form. In truth it is none of these things. What the Greenline hull appears to be is a reasonable answer to lower speed[.....]