More from the archives
Cost of two BS-4 103ft stroke catapults including CALE gear – L400,000
Cost of cancelling the second unit (HMAS Sydney) in penalty payments L15,000, saved by another Commonwealth country purchasing the second unit and avoiding cancellation fee.
Sydney specification, early 50’s
BH3 Cat 20,[email protected]
Lifts 15,000lb max
Generating Capacity1400Kw TG, 400kw DG. (Melbourne 1400KwTG, 800Kw DG)
Power consumption of two lifts 15,000lb, 45 second cycling – 308kw.
More on cats
Mk 8 Arrestors (Melbourne Mk 12) 154ft pullout
18,000lb @ 59 knots
12,000lb @ 60 knots
Barriers 88ft pull out
15,500lb at 60kt
12,000lb at 66kt
Sydney’s Crane, 6.5 tons at 45ft radius, could lift a Gannet at 28ft radius if modified.
Sydney’s fuel 80,000 gallons Melbourne (1954) 146,000 gallons.
Much discussion on a minimal Gannet/Venom modernisation for Sydney in 1954 – axial deck bit with steam catapult and Mark 12 arrestor gear, lift machinery upgrades, crane upgrades, sonobuoy maintenance room, deck stiffening aft and forward, additional aircraft generators and other Gannet specific kit.
Some discussion on the light ASW aircraft (The Seamew) – presumably Syndye compatible with a limited upgrade as per Warrior – modified hydraulic cat, arrester gear, workshops, lifts deck stiffening.
Melbourne’s 1949-54 modernisation cost capped at 500,000 pounds excluding steam cats – probably 1949-51 pounds – RN picking up the difference.