18-in Fiume Mark I Torpedo
The 18-in Fiume Torpedo was a torpedo manufactured by Whitehead from 1890 onward.
Development
A delivery of 150 18-in torpedoes from Fiume was completed in 1890, two of which were "short" were found to do 28.44 knots to 800 metres in 65 degree water.[2]
"Long" and "short" 18-in torpedoes from R.G.F. and from Fiume were evaluated in 1890, alongside proven 14-in designs.[3]
Fired from Seagull while she was at 18 knots, the long Fiume deflected 26 degrees when fired 57 degrees (this angle may be misread from a blurry image) abaft the beam, the same when fired 30 degrees abaft, 22 degrees abeam, and 11.5 at 30 degrees ahead and 5 degrees at 60 degrees ahead. The short torpedo generally did a little better except at the last angle: 21, 17, 17, 6 and 7 degrees. When these deflections were allowed for, the long Fiume would have been lost on 4/23 shots, and the short Fiume on 5/14 versus just 2/20 for a long R.G.F. model.[4]
Footnotes
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