penfold
Well-known member
In drydock; the prop shafts are in sections and they come apart, otherwise as Bouba suggests the drydock would need extended by ~50%.Wonder how and where you draw the prop shaft on an ACC
In drydock; the prop shafts are in sections and they come apart, otherwise as Bouba suggests the drydock would need extended by ~50%.Wonder how and where you draw the prop shaft on an ACC
A man of your artistic talents should manage to find somewhere for a piece of paper and a pencil.Wonder how and where you draw the prop shaft on an ACC
Not ironic, lucky; if she hadn't run aground she'd probably be on the bottom with them, a dozen or so Hurricanes would not have held off 90 bombers.
There are DDs which could be made fit for the carriers but that isn't a priority for MoD(a mistake IMO); KGV in Southampton, Inchgreen in Greenock, No5 dock at Cammell Laird will all fit the hull, but may need changes to accommodate the sponsons etc. There is the big dock in H&W, but IIRC the RN haven't liked sending things to Belfast since an RFA refit went a bit wrong. The industrial strategy still has holes in, Rosyth is not and should never have been considered viable for emergency docking, Between tides and sniffing either the bottom or dock walls it's too hard to get the carriers in and out.
Ruhr harbour, pull up on the sands and you’ve got a few hours to sort out your shaftDoes England not have a dry dock big enough?
There will be spare blades but whether there are spare hubs IDK. KGV makes the most sense as Portsmouth is the home port and will have both civil and RN technical and admin staff there already providing support, commuting to Southampton is not exactly a major imposition. ABP use it for bulk cargo at the moment, but it's not exactly a major revenue earner.Wonder where the spare prop for the QEs is?
(There is a spare prop…?)?
There will be spare blades but whether there are spare hubs IDK. KGV makes the most sense as Portsmouth is the home port and will have both civil and RN technical and admin staff there already providing support, commuting to Southampton is not exactly a major imposition. ABP use it for bulk cargo at the moment, but it's not exactly a major revenue earner.
C&A....wouldn’t Army & Navy be more appropriate ?At least if they go to Rosyth, there's a branch of CA Parson's next door. Not the original Heaton works, but probably still got a big Lathe and a balancing rig.
The Heaton works still has the world's largest pressure vessel for checking large spinning things are running true. Could have been useful in the manufacturing process.C&A....wouldn’t Army & Navy be more appropriate ?
CVF has 80MW on two shafts. Wiki says Mauretania was 51MW on 4 shafts, raised to 67MW in the 20s. I'd be curious what the risk assessment for having only two shafts was like; up until HMS Invincible in the 70s all RN carriers had been 4 shafts and Ark Royal at least spent quite a while running on 3 due to marine casualties.The Heaton works still has the world's largest pressure vessel for checking large spinning things are running true. Could have been useful in the manufacturing process.
Surprised that POW is listed with that SHP. Swan Hunter's Mauretania (powered by Parsons) had more than that 100 years ago.
I suspect it was the cost of the gear sets rather than any real difficulty doing it; the bigger liners were exceeding that by the end of the 20s. Machinery layout considerations probably discouraged putting more power into single shafts, plus the props start getting very big, heavy and harder to cast.There used to be a naval architect’s rule of thumb that one should not put more than 30,000 shp on a shaft. I don’t remember the reason for this but I do remember the late Marshall Meek of Blue Funnel Line, designer of most of the OCL fleet, quoting it.
Or they didn’t burp it? Do McDonald’s still do plastic straws?!Today the front page of the Torygraph is reporting from 'naval sources' that it may have been a lack of grease on the shaft that caused the failure ... believable?? possible??