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The Holland is a long ongoing side project. The torpedo tube and its intricate interlock mechanisms is a project of it's own. My understanding is, that one opened the torpedo hatch by cranking it open via thread rod and at the same time compressing ait in a cylinder. Opening the hatch also actuated a lever mechanism, that interlocked the breech door from opening. Then you could open the firing lever guard, which also actuated a safety valve, preventing the accidental firing of the tube. Flooding of the tube was done via two valves, the levers of which also interlocked the breech door from opening. Complicated stuff and I still miss information....anyone with some documents about whitehead torpedo tubes?
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Last edited by DrSchmidt; 09-07-2025, 03:31 AM. -
The torpedo tube and the compensating tank are close to be finalized....some bolts and rivets are mssing.
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Starts to look like a boat:
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I'm working on the general arrangement of the various tanks. The boat had 6 torpedo compensating tanks, 2 for each of the three torpedoes it could carry. One in the tube, a spare on port and starboard.
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Fitted the remaining air tanks and started modeling the holding brackets. Also added the spanner rack on the port forward compensating tank.....slow work.
Last edited by DrSchmidt; 09-27-2025, 03:27 PM.Comment
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More detail work...and the port spare Whitehead torpedo...
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Creating these CAD models I can easily spend 1-2 days modeling a manual piston water pump from 1900....
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And when the pump is done, it find ts place almost invisible under the port ladder to the Otto motor....
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Working on the plumbing.....I'm currently designing the water piping. The arrangement is based on the John Lambert plans, which are quite detailed about the section in blue, but as I'm missing a true piping plan, most hoses will end in the nowhere. Does anyone have more information about the water and air piping in the HMS Holland 1?
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More details on the water piping and valve setup.
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Water piping with valve manifold is done....spent some hours getting every flange its bolts and nuts....and then the hand wheels.
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Impressive work, I hope this model will be available when it is finished as it would make possible many recreations in computer games and help preserve the history of this vessel.Comment
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As I wrote in another thread about my CAD models...I'haven't decided what to do with them yet. Just releasing them for free doesn't feel right after the years of work that I put into them. I'd lov to see them used in making proper plastic kits, so if Bronco, Trumpeter, Revell, etc. are willing to take them, I'd be happy to sell them. But I have no connections in the producing part of this community and I'm currently not actively searaching. With respect to 3D-printing: The models are not print ready. So just putting them onto an 3D print portal doesn't seem right. And with respect to computer games....I've been contacted about that once or twice before. But again, just handing out several years of work so that others can make money from a game that I'm not even playing....Comment
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Continuing the work with the periscope. This was a unique design by Captain Bacon in which the scope wasn't raised vertically bit tilted upwards like a mast. For that and the rotation the scope was routed through a huge ball bearing with a circular seal in the front plate of the periscope cowling. The raising and lowering was achieved using a manually driven worm gear that rotated a cogwheel that ran along a circular cog rail. The turning of the scope was again achieved using a manually actuated worm gear.
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Took a while to get the cowling for the periscope right. I first drew the cowling according to the periscope drawings, but that would have lead to a collision between actuator lever and cowling when the periscope is lowered. Then I modified the cowling according to the Lambert plans. Better,but still a collision and still no match to the photos of the original. So some more modifications without drawing but common sense. Now it's about right. Finally I integrated it into the hull...
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