Search found 867 matches

by Steve Crandell
Sat Feb 26, 2022 6:20 am
Forum: Hypothetical Naval Scenarios
Topic: Jean Bart vs Roma
Replies: 6
Views: 912

Re: Jean Bart vs Roma

No, probably pointless with an artificial "penalty" like that. Assume shells with no defects or gas pockets.
by Steve Crandell
Mon Jan 24, 2022 9:35 pm
Forum: Bismarck General Discussion
Topic: Bismarck 'Gürtel' Construction
Replies: 10
Views: 1453

Re: Bismarck 'Gürtel' Construction

Some of these things desperately need to be digitized so they aren't lost forever.
by Steve Crandell
Sat Jan 22, 2022 11:34 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

We have no way of knowing how many of the kills by 40mm and 20mm were seriously damaged by 5" fire before they got within range of the former, but the CIWS would always get credit for the kill.
by Steve Crandell
Sat Jan 22, 2022 7:42 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Again, I would argue that if BuOrd had conducted and published a proper and honest evaluation of Mk37 AA efficacy, that the UK could have avoided, what turned out to be a costly mistake. And you are claiming that in 1950 the British still didn't know the actual capabilities of the Mark 37. Why was ...
by Steve Crandell
Sat Jan 22, 2022 6:10 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

As I stated earlier, MK37 was replaced, in the Audacious class, as the primary AAFC system by MRS3 (similar to MK56). Mk37 was supplied for free at a time when the MK6 director was in short supply. According to Porteous Mk6 and GRUS/GRUDOU and/or Flyplane was superior to Mk37. I don't think you poi...
by Steve Crandell
Sat Jan 22, 2022 2:36 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

I was just reading on the armoredcarriers.com web site about the design of the Audacious class. I found the following sentence:

"Fire control system was also improved: It was a grafting of the US Navy’s Mark 37 director with a modified Royal Navy Type 275 radar set."
by Steve Crandell
Mon Jan 17, 2022 3:02 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

I'm pretty sure Mark 37 dead time was set by the director. It was then up to the shell men to be consistent in how long it took them to remove the shell from the hoist fuse setter and place it in the loading tray. Most ships with 5"/38s had a loading trainer, so it's just a matter of training w...
by Steve Crandell
Mon Jan 17, 2022 12:08 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

I'm somewhat confused. You said "PoW did quite well against level bombers at ~9000ft (IIRC) using radar, even with a substantial list and half her 5.25in armament OOCS". I'm not sure you addressed my question, which was whether a US ship could do as well PoW could do. If not, why not? You...
by Steve Crandell
Sun Jan 16, 2022 8:28 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

I'm somewhat confused. You said "PoW did quite well against level bombers at ~9000ft (IIRC) using radar, even with a substantial list and half her 5.25in armament OOCS". I'm not sure you addressed my question, which was whether a US ship could do as well PoW could do. If not, why not? You ...
by Steve Crandell
Sun Jan 16, 2022 7:39 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Doesn't sound like someone who thinks HA fire is useless. Presumably his thinking changed at some point, since you have determined that HA fire doesn't do very much. edit: was referring to the Halpern quote. I think the salient points are that there was over 100 observed runs and only a few drones ...
by Steve Crandell
Sun Jan 16, 2022 6:44 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Steve Crandell wrote: Sun Jan 16, 2022 6:43 pm Doesn't sound like someone who thinks HA fire is useless. Presumably his thinking changed at some point, since you have determined that HA fire doesn't do very much.

edit: was referring to the Halpern quote.
by Steve Crandell
Sun Jan 16, 2022 6:43 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Doesn't sound like someone who thinks HA fire is useless. Presumably his thinking changed at some point, since you have determined that HA fire doesn't do very much.
by Steve Crandell
Sun Jan 16, 2022 4:57 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

I believe the Mark 51 required that the guns had RPC. Was that true of GRUB? Which British HAA had RPC? You said GRUB controlled the same guns as HACS or FKC, so does that mean one GRUB would control ALL HAA by switch transfer? Each Mark 51 was only connected to 5" mounts which could bear on th...
by Steve Crandell
Sun Jan 16, 2022 2:16 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 358
Views: 11024

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Could GRUB be linked to the HAA like Mark 51?

Were there British ships with Mark 51?
by Steve Crandell
Sat Jan 15, 2022 2:40 pm
Forum: Hypothetical Naval Scenarios
Topic: Scharnhorst vs Alaska
Replies: 10
Views: 614

Re: Scharnhorst vs Alaska

Gentlemen, Thanks for your replies, I realise this is a bit 'off topic' but I wonder why the USN went for 12" guns and armoured the Alaskas to protect them against 10" shells? By the time that they were built 10" & 12" shells were a throwback to WW1, unless of course it was ...