The Drydock - Episode 313
Added 2024-08-31 09:00:08 +0000 UTC00:00:00 - Intro
00:00:42 - Could the RN have built two G3-based carriers like Lexington or Amagi?
00:07:41 - Had USS New Orleans and USS Chipawa been completed, would this have possibly resulted in an early attempt at building a proto-Weland canal to give the two first rates access to the sea?
00:12:12 - Did the 'nothing' in the all-or-nothing armour scheme ever come back to haunt a ship?
00:17:42 - Was HMS Hood an inefficient design?
00:23:31 - Trying to deploy submarines against carriers generally ended in failure due to the speed difference, as the Japanese found out the hard way with their flawed submarine doctrine. So what went into pre-positioning American submarines in the paths of much faster Japanese capital ship forces?
00:27:56 - Is there any record of a hedgehog being fired at a surfaced submarine, and would this have been effective?
00:30:30 - In a recent video Ryan (from USS New Jersey) listed museum ships that had recently been drydocked and I noticed that none of them were subs. Can you discuss the differences between drydocking a surface ship versus a submarine and what that might mean for museum subs?
00:35:47 - How did the Germans stay current with submarine technology but fall behind in surface ship technology in the interwar period?
00:39:01 - Why transport bricks from the Netherlands to Batavia? Was there an international trade of stolen maps and charts?
00:45:08 - South African Navy in WW1 and WW2?
00:48:08 - In the period covered by this channel. What tactical or strategic decision was based on (or approximately on) spite?
00:51:21 - 15" armed Panzerschiffe?
00:55:49 - Do we have any idea when sailors started being buried at sea?
00:58:47 - How many lost body parts before Nelson would have had to retire?
01:02:18 - For the nations that either partially or totally missed the first generation of dreadnoughts by being slow off the mark, would any have been better off centering their forces around battlecruisers rather than battleships?
Comments
Future Drydock question: Will your logo ever fix the spelling of "historiographer" ?
Dubsington
2024-09-03 17:03:15 +0000 UTC"Bricks to Batavia" - via BATAVIA The East Indiaman BATAVIA was carrying a set of stone blocks for the construction of an arch in Batavia (the city) when she was wrecked on Morning reef, Houtman Abrohlos, in 1629. These blocks were salvaged, and erected next to the salvaged BATAVIA hull structure in Fremantle Maritime Museum (visited by Drach). Later they were moved to the museum in Geraldton, and replicas placed on display in Fremantle. Score - one shipwreck, one block set salvaged, and replicated. 2 arches on display in Australia. Nothing in Indonesia as far as I know.
Peter Navarch
2024-09-03 02:48:25 +0000 UTCSupporting Submarines in Drydock This includes submarines on slipways. I was involved in this professionally around 1970, developing the concept of a slave dock for the main refit dockings of the RAN Oberon submarines. My observations come from these Oberons dockings, and the earlier dockings of the RN T class boats. The main weight is carried by the keel blocks, supporting (on these boats) the box ballast keel. So far so good. Now comes stability. Bilge blocks are not easy, due to the major curvature of the external tanks on these boats. Multiple side shores, roughly horizontal, between the wide, near vertical surface of the external tanks and the dock walls are also not easy, as said vertical surfaces are well submerged on the floating, or just grounded submarine. For the slave dock we needed to support the submarine from the slave dock structure, as slave dock and submarine would be floated out from the graving dock. The solution we adopted was to build 3 pairs of towers on the deck of the slave dock, abreast the 3 hard points of torpedo hatch, conning tower and engine room hatch. Each was equipped with a swing in counterweighted shore that could be wedged off the relevant hatch, with or without casing in place. This worked for the duration of the Oberons slave dock program. 3 shores per side allowed one at a time to be released for work on the structure shrouded by that shore. HMAS OVENS is permanently supported by around 12 angled bilge supports each side. See WA Museum photos of OVENS. I do not know what side supports were used when she was (permanently) hauled out on this slipway. I expect some form of legacy side arms. An alternative would have been a series of slide in bilge blocks, with tangential contact to the external tanks surface. I have used such blocks for RAN ATTACK class patrol vessel slippings. Out of water retention of submarines is somewhat of a cop out. It has been applied to OVENS here in Fremantle, and HMS ALLIANCE in Gosport, England. ALLIANCE is supported with keel at ground level, and a series of low level bilge chocks. HOLLAND 1 is displayed indoors.
Peter Navarch
2024-09-03 02:31:07 +0000 UTCSupporting Submarines in Drydock
Peter Navarch
2024-09-03 01:44:29 +0000 UTCThank you for warning us with plenty of time to evacuate
BEAUSABRE23
2024-08-31 15:23:32 +0000 UTCHang Admiral Nelson on this hook.
BEAUSABRE23
2024-08-31 15:11:33 +0000 UTCThe problem with S&G having 11 inch instead of 15 inch guns only made them suitable for raiding - a direct threat to Britain's survival.
BEAUSABRE23
2024-08-31 15:10:23 +0000 UTCSaturday morning coffee with Drach, life is good. Thank you Drach!
W. Osterberg
2024-08-31 12:29:55 +0000 UTCThanks Drach!
Graham William Kidd
2024-08-31 11:01:59 +0000 UTC
