Low Tide

Yacht Designer Tad Roberts' Web Log

Monthly Archives: November 2015

BC Handliner, Luoma Loon

Luoma Loon, BC Handliner built by the Luoma Brothers at Shack Island probably in the 1930’s. She’s 13′2″ x 4′ to the outside of her 1/2″ planking. 12 strakes of red cedar, six per side, on 1/2″ x 1″ bent frames spaced 6″. The Luomas built dozens of these between the 1920’s and 1940’s. At one[.....]

Gillnetters at Cassiar Cannery

Gillnetters at Cassiar cannery waiting for the season to start. All painted up, some of these are new boats, one or two built at the cannery and others built by Wahl’s in Prince Rupert. No chimneys so these boats had no heat. This was post Easthope, boats were running Chrysler Crown’s or Ace’s. The[.....]

Capsize of Refugee Boats in the Mediterranean

Mass drownings in the Mediterranean Sea day after day. A horrible situation that’s entirely preventable, or would be if someone (UN?) could enforce some simple loading guidelines. Of course I realize the problems are not anything close to simple, and the only real cure is to eliminate the need of people fleeing their homelands in search[.....]

Stability and the Leviathan II

Leviathan II has been recovered and is floating upright. This is good and it will allow investigators to gather facts on the precise condition of the ship at the time of the accident. Unfortunately, damage is so extensive that any “real stability at time of capsize” will be impossible to establish. This[.....]

The Troller Georgina

Her name is Georgina, a very old picture of a troller, perhaps before gurdies, for sure no davits. No exhaust stack so probably Easthope power. It’s mesmerizing how these old boats would slip along at 5 knots with no wake at all. Photo courtesy Don Macmillian, from his mother’s collection. Likely taken on the North[.....]

Small Boat Stability

Before we start looking at specific stability issues and possible regulatory problems, it’s important to get the basics understood. Above is a basic diagram showing three stability cases. The “Stable Condition” where G is below M and there is a positive GZ. Gravity is pushing down through G, the Buoyancy force is[.....]

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