Marine steam engine model power units

Very interesting. Total water loss, no water recovery, no condenser, right? :)
 
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I'm no mechanical engineer, but is that a boiler coupled with a two-piston engine? Could you please elaborate a little more on that? Just out of curiosity, because I have lived "on top" of boilers almost my whole life as a line officer, but I was more into Ops.
And I can't figure out the size... I think the long pipe we see in your pics should be about 10cm (4'), is that right?
 
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I'm no mechanical engineer, but is that a boiler coupled with a two-piston engine? Could you please elaborate a little more on that? Just out of curiosity, because I have lived "on top" of boilers almost my whole life as a line officer, but I was more into Ops.
And I can't figure out the size... I think the long pipe we see in your pics should be about 10cm (4'), is that right?
Yes
 
As you can see, we want as much information as you would like to offer. Blueprints would be really neat, if you have any. :)
 
Are you running the electric motor as a generator? :)