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Re: Why don't people like double Enders?
I went and dug up this thread because it came up in another thread. I have a few questions to help to me understand the qualities of pointy sterns that make them less capable in situations where extended sea keeping ability is required or desired.
My first question is, assuming my engine and largest wetted surface area is aft of midships, which it often is, if I were to become disabled unexpectedly, how would my boat most likely lie to the wind and seas? I know many factors could effect this, but would it be reasonable to assume that some boats would drift with their stern or quarter facing the wind and sea?
What about the old sailing work boats? When the seamen stopped tending to sails and oars so they could haul nets, traps, hook up a tow, how would they have drifted? Quarter into the sea?
Dismasted boats? This I am sure will vary on how the wreckage lies, but will they often drift with their quarters into the wind and seas?
Is it possible that designers of old working boats and life boats weren't solely concerned with how it was easiest to build a wooden boat? After all, some of them were pretty good at their craft. Maybe there was another non aesthetic reason for building sterns that were resistant to breaking seas? Maybe this design was in some way advantageous when a boat is disabled at sea, by any number of factors? Is it possible that many boats will drift, when disabled, bows down wind and the stern in fact becomes the front of the boat in that scenario and a high stern, that parts the seas is actually better on a totally disabled boat? Or, if they ride bow to the sea, would the boat not be moving backwards through the water?
If a boat is built for ultimate survivability, what considerations would a skilled designer consider? Would they consider how well she ran off the wind in moderate conditions? Are moderate conditions the most dangerous? What would the most dangerous reasonable conditions for a vessel in survival mode be? Would it be a disabled boat? Would the winds be howling and the seas be running high? Could she be riding stern to the seas partially flooded?
Commercial working vessels have taken the same trend as yachts, they have turned away from high rounded sterns to square sterns. Did they do this to make the boats more sea worthy? Or did they do it so they could move the accommodations and machinery space further aft to allow for greater cargo capacity forward? From what I know of ship owners, the decision probably had a lot more to do with earning capacity than safety.
Is it possible cruising yachts were switched to square sterns for the same reason? Increased space and buoyancy aft, so they could increase the living space forward? Maybe they didn't do this just for safety, maybe marketing was also a factor in the sugar scoop stern? Do designers take a dismasted/disabled steering/otherwise disabled vessel into consideration when designing a vessel? Should they?
Is it reasonable to assume that if I spend enough time in offshore conditions I may eventually experience a disabling condition such as a disabled rudder, rig or engine, or all 3 of the above at the same time? Any time I've been around a dismasting, I have observed the damaged rig halyards and sheets have disabled the prop. Was that just fluke?
So many questions.
Last edited by Arcb; 09-23-2016 at 11:52 AM.