Part of the
Acorn Archive
Hearts of Oak
PTF Nasty
Steve Palk's
Nasty Class PTF, fast attack vessel, built for Norway.
In Penzance Harbour; 15th Nov 2006
This
ship is one of the 11 “Nasty” Class PTFs, held at Horten, and sold by the
Norwegian Government in 1981. Stev Palk has brought this ship from Scotland,
and then to Padstow, where extensive works were carried out. She has been towed
to Penzance, and Steve continues his untiring restoration. He has hopes of
having her seaworthy by 2009. The prospect of
power and speed around Wolf Rock is extremely enticing. The Napier
Deltics have been sold, and Steve is awaiting delivery of the two new engines,
shortly.
In Penzance Harbour 2007; Engines removed, see below.
See http://www.ptfnasty.com/index.html
Napier Deltic
engines.
Both
were in working order. But rather expensive to run!! And very tricky to get
started. Even more tricky to service. The "gearbox" is in fact the
gear phasing arrangement for the three crankshafts. (one at the bottom, two at
the top in inverted triangle). The output shaft can just be seen as the
unpainted metal. As built for the RN the Napier Deltic had a continuous output
rating of 1875 bhp at 1700 rpm. British Rail had similar engines in the
"Deltic Class" diesel-electric locomotives built by English Electric.
Two engines were fitted in each loco with a combined output of 3300 bhp at 1500
rpm. It is effectively an 18 cylinder two stroke engine. As fitted to Coastal
minesweepers (Ton Class ) 2 x main engines and one "pulse" generator.
PTF
Nasty’s were fitted with Two Napier Deltic Engines.
Each
18 cylinder, 36 piston, turbo-charged diesel engine; 3,100 bhp @ 2,100 rpm
Overall
weight : 19,500 lbs.
The User’s Guide to the Napier Deltic (pdfs)
http://www.intertrader.net/ptfdeltic.htm
Napier Deltic info at
http://www.ptfnasty.com/ptfDeltic.html
Raymond Forward
24th October 2007