Re: Firm vs. round bilges conducing to greater or lesser seaworthiness, and old boat photos to illustrate the difference:
This issue reminds me of an article in the MAINE COAST FISHERMAN magazine decades ago about the 60-foot Novi Long-liner model that proliferated with Canadian Loan Board support in the early 1950s. In the title of the article was the phrase, “Safety vs. Economics”.
The model was basically an aggrandizement of the traditional 30-to-40-foot Cape Island Novi launch, which had proven itself inshore over many years Lobstering; line-trawling for groundfish, and in the harpoon Sword-fishery.
The interplay of safety and economic viability will always exist, in boat design, as well as life in general.
The question about the relative safety of these boats arose after three (3) Lockeport, Nova Scotia 60-footers went down in the same gale in 1961. The vulnerability of the forward deckhouse to being smashed by green seas when “going into-it” was cited, and the flatter hull shape below the waterline, compared with the aft-placement of the pilot house with a typical Eldridge-McInnes-designed 60-foot, rounder-bilged, Eastern-rig-style.
Illustrated below is a 60-footer, the JOE BOOK, a very successful groundfish long-liner and Swordfish harpooner, and for comparison an Eastern-rigged vessel, the ADVENTURE, also very successful, designed and built for the same fisheries. (Photos by E. A. Whynot)
The third illustration is of drawings used in the article, and later for a marine calendar. It includes the two hull types in question – dragger vs. longliner -- drawn by Samuel Manning who both illustrated and wrote the referenced article 60 years ago.
Both were proven hull designs in rough water; but are the sea-keeping abilities in extreme conditions equivalent?
In moderate weather, the Long-liner was typically very stable when laying-to at night, with the flatter hull shape, aided by the spanker sail.
The ADVENTURE, in contrast, was notorious as a roller, like a bottle afloat, albeit ballasted, and always righting itself. Reputedly, it was a constant but easy roll.
Draw your own conclusions, and there many factors to consider, some material, others human; but in the same gale that sent the three Lockeport 60-foot long-liners to the bottom, the ADVENTURE survived, with her older-styled, more sailing-vessel shaped hull, without so much as overturning an oil drum lashed on deck.
