In posting on the dilemmas and choices or iterations, I’ve not been putting that which is taken as read, also many of those iterations are a choice between two variants, not oh which, oh which angst.
The things which have not altered from the start are length and breadth [BOA] – 41 feet by 6’10”, straight-sided in any iteration, so there’s nothing more to post on there.
Or is there? There’s a mono version with keel and ballast, it works, using much the same rig as the catamaran, the cat’s set further back on beams. the cat variant has huge advantages and also disadvantages – primary disadvantage is knockdown – she doesn’t turn back right way up.
But for cruising, the provisions and repairs carrying capacity of the cat and the sheer living area, plus the highly attractive ability to provide personal cabins for crew/guests, plus the speed, plus the near-flat motion [5 degrees] through the water, plus I know the physics of cats, having built them before – they really tip me towards that over the mono of the same length.
Big Boys featured sixteen driving wheels in two sets of eight. The front set of drivers pivots as though it were a separate engine under the same boiler. Another of UP’s operating steam locomotives, 844 with eight driving wheels, was a standard mainline engine in its day. Call it “half a Big Boy”.
Twenty-five Big Boys were built by Alco of Schenectady NY between 1941 and 1944. Big Boy 4014 was acquired from a California museum by UP in 2013 and restored to running condition video.
Seven others also escaped the scrapper’s torch and are currently on display. On Saturday, May 4th, 4014 made its first trial run in preparation for the May 9th Golden Spike ceremony at Ogden, Utah .