WesWorld

A lot, lot smaller.



Scale is 1:47 like the other drawings i've recently posted. Anyone care to guess; what it is? speed? dimensions? armament?

A joke?

*just kidding*

No ideas....

I would say a small aircraft transport for transfering aircraft from a harbour to an aircraft or floatplane carrier. She has an excessive armament if this is the case though.

Both wrong, but Hooman is doubly wrong. This thing was a real project for the MM. And no she isn't an aircraft transport.

A lot of guesswork, and it's not the best of ships, but it is rather small, so...

Sconosciuto, Italian "Haven't-Got-A-Clue-What-It-Is" ship laid down 1924

Displacement:
177 t light; 182 t standard; 215 t normal; 241 t full load
Loading submergence 36 tons/feet

Dimensions:
124.67 ft x 17.06 ft x 7.87 ft (normal load)
38.00 m x 5.20 m x 2.40 m

Armament:
1 - 2.24" / 57 mm guns
2 - 0.79" / 20 mm AA guns
Weight of broadside 6 lbs / 3 kg

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,365 shp / 1,019 Kw = 17.50 kts
Range 3,500nm at 12.00 kts

Complement:
28 - 36

Cost:
£0.041 million / $0.162 million

Distribution of weights at normal displacement:
Armament: 1 tons, 0.4 %
Machinery: 45 tons, 20.9 %
Hull, fittings & equipment: 81 tons, 37.7 %
Fuel, ammunition & stores: 38 tons, 17.9 %
Miscellaneous weights: 50 tons, 23.2 %

Metacentric height 0.4

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is cramped

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.03
Shellfire needed to sink: 268 lbs / 122 Kg = 47.4 x 2.2 " / 57 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.3
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 40 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.05
Relative quality as seaboat: 1.08

Hull form characteristics:
Block coefficient: 0.450
Sharpness coefficient: 0.35
Hull speed coefficient 'M': 6.35
'Natural speed' for length: 11.17 kts
Power going to wave formation at top speed: 66 %
Trim: 29
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 96.2 %
Relative accommodation and working space: 69.5 %
(Average = 100%)
Displacement factor: 147 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.02
(Structure weight / hull surface area: 31 lbs / square foot or 150 Kg / square metre)
Relative longitudinal hull strength: 5.29
(for 8.20 ft / 2.50 m average freeboard, freeboard adjustment 1.17 ft)
Relative composite hull strength: 1.20

What it is used for???
No idea...
Perhaps a submarine chaser?

Walter

Your length is spot on Walter but everything else except those secondary guns is wrong. I have tried to sim this vessel with springsharp but it doesn't remotely work. Diesel engines? why not petrol?

Quoted

Your length is spot on Walter

Well, it should be. I used the Francesco Caracciolo to determine the length of this small one. I also noticed that the Francesco Caracciolo uses 3" guns which are similar to the gun on the small vessel. However, a 57mm gun on a smaller vessel also appeared to be similar to that gun...
... but as I said, it was mostly guesswork...

Quoted

Diesel engines? why not petrol?

Petrol? Well, perhaps because you need the petrol for something else.

Walter

If you have petrol you could use it for both the boat engines and the aeroplane, thus not having to carry 2 different fuels.

For guns, there is little difference between 57 and 100mm weapons. Especially as the 100mm are of 45 cal, and the 57mm are 60cal i think.

Mas 38

Year November 1924
Shipyard Cantieri Navali del Quarnaro
length 38m
1 102/45
2 25mm
4 Torpedoes
1 seaplane M.18 or 8 more torpedoes.

That's a neat little thing...
... and as you said, I was spot on when it came to the lenght of the vessel.
You plan to build a lot of these little pests?

Walter

Building them? I'm not sure about that.

38m hull and 12 torpedoes? Sounds like a good combination.