Part V
1. during the 147 days betweenand including 6 June1944 to 30 October1944 battleships operating with the stricking force were underway during all or part of 123
days.On 105 of theses days boilrt power for speeds in excess of 23 knots was required during all or part of the day
2. Shipsof the North Carolina and South Dakota classcan make 23 knots with half boiler power(one boiler in each fireroom cut in) When boilerpower for speeds in
excess of 23 knots is required,it is necessary to cut inall boilers,in orderto operate each engine as a unit,with no cross-connection open.Whileit is possible
to make over 25 knots with one boiler secured,by runningthe shafts at a different speeds,this is not a standard practice and is resortedto only when
necessaryto secure one boiler for a short period as for example to renew a leaking gasket.
3. This high percentage of time operating under full power results in greatly increased upkeep requirements.The life of boiler brickwork and tubesis shortend
and the reliability of the main propulsion plants is seriouly compromised.
4. It is recommeneded that battleships of the North Carolina and South Dakota classes be not required to cut in boilers for speeds in ecsess of 23 knots
unless there is some prospect that the battleships themselves will be reguired to make such speeds.
5. It would appear that the great majority of carrier task group operations can be accomplished without requiring the supporting battleships to increase speed
above 23 knots.If the task group steames into the wind for 30 miniutes with the carriers making 27 knots and the battleships making 23 knots the resulting
seperartion will be in the order of 4000 yards. It is believed that this seperation can be accepted under all but the most immediate prospects of enemy attach
Part V
!. No personnel casualties occurred as the result of enemy action while operating as Task Force THIRTY FOUR
Signed
W.A. Lee Jr.
Thoght you might like to review this
Nuff Said
BOB
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 BOBC 59 |
action report Leyte Gulf commander tk forc 34 pg 11 0f 11 |
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Posts: 1137 ( 8-Apr-2008 00:00:17) |
For those that fought for it,Freedom has a taste and meaning ,The protected will never know.
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emc |
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Posts: 3641 ( 8-Apr-2008 00:22:23) |
Gee, paragraph 5 would sort of indicate that the 33kt speed of the Iowa class could be considered as less than crucial to their carrier escort role.
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jlyons97 |
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Posts: 1412 ( 8-Apr-2008 03:43:53) |
emc wrote: I have noted frequently in and out of a lot of conversations on this forum about full power that even in wartime ships were at there a small percentage of the time. On my DD fuel usage at full power went from 1100 gal/hour at 17 kts (one boiler cross connected in the after fireroom, supplying both engines) to 5400 gal/hour (four boilers, nominally 32 knots). Even the big boys cannot do that forever. The jump to 8 boilers on all the fast BBs above 23 kts (or so) was inevitable if such speeds were required for long periods. Using any number of boilers above 4 but less than 8 required balancing all the cross-connectable piping systems (main steam, auxiliary steam, condensate, auxiliary exhaust, hp drains and lp drains). This was virtually impossible - eventually the water level in all four DA tanks would be out of balance (some high, some low). Without going into great (or even simple) detail about the 'steam cycle' in these plants no Chief Engineer valuing his sanity would agree to such a thing if there were alternatives. |
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BOBC 59 |
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Posts: 1138 ( 8-Apr-2008 05:04:27) |
joe wrote
I have noted frequently in and out of a lot of conversations on this forum about full power that even in wartime ships were at there a small percentage of the time. On my DD fuel usage at full power went from 1100 gal/hour at 17 kts (one boiler cross connected in the after fireroom, supplying both engines) to 5400 gal/hour (four boilers, nominally 32 knots). Even the big boys cannot do that forever. The jump to 8 boilers on all the fast BBs above 23 kts (or so) was inevitable if such speeds were required for long periods. Using any number of boilers above 4 but less than 8 required balancing all the cross-connectable piping systems (main steam, auxiliary steam, condensate, auxiliary exhaust, hp drains and lp drains). This was virtually impossible - eventually the water level in all four DA tanks would be out of balance (some high, some low). Without going into great (or even simple) detail about the 'steam cycle' in these plants no Chief Engineer valuing his sanity would agree to such a thing if there were alternatives. Ah yea u put some time in the enginneerig dept!! spoken like a true snipe you gotta just love the DA tanks for attennsion getters NUFF SAID BOBC BOB
For those that fought for it,Freedom has a taste and meaning ,The protected will never know.
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jlyons97 |
"you gotta just love the DA tanks for attennsion getters" | ||
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Posts: 1414 ( 8-Apr-2008 09:24:50) |
Bob,
If you were ever privileged to drink Olympia beer, you'll remember their motto "It's the Water." I gave permission for the guys in #1 Fireroom (the DFT was in that space on 1200 psi ships) to paint the Oly logo on the DFT about 10' high! Well, actually I gave permission after the fact. Seemed easier that way, and besides, I wish I'd thought of it. |
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BOBC 59 |
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Posts: 1139 ( 8-Apr-2008 20:10:25) |
we Hated it when we ran at 20knots and above with one boiler not much breathing room for a error or a bad leak any where in the whole system!
yea we had our 1st major overhaul at Bremerton so I know Oylimpia beer made with artisian well water! I liked that "permission after the fact" saves wear n tear on all personell, snipes are a different breed of sailors to say the least. i have the whole action report it was a job typing that page 11 as i be a one finger typist so it took me more than a few mins to do it, just thot some would like to lull that page over, So Daks were a very good class!! NUFF SAID BOB
For those that fought for it,Freedom has a taste and meaning ,The protected will never know.
Last Edited By: BOBC 59
8-Apr-2008 20:15:28.
Edited 1 times.
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Tony D |
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Posts: 2355 ( 8-Apr-2008 20:49:14) Da Boss |
emc wrote:
Half power on an Iowa is about 28 knots. So, it's not as large a strain on those ships to keep pace with carriers operating at 27 knots as it was for the earlier classes. That was actually one of the rationales for keeping the Iowas active in the 1945-1950s and reactivating them in the 1980s. Other than that, your point is well taken. A problem for any fleet commander is when there is a large disparity in the capabilities of the ships under his command. I've read several times how the Royal Navy had problems in the interwar period as there was such a wide variation in the speeds of their capital ships. Having 21 knot Iron Dukes, 25 knot QEs, 23 knot Nelsons and 30+ knot battlecruisers and carriers all operating together can cause obvious problems. What paragraph 5 shows here was how the USN faced very similar problems with the speed differences in their capital ships. |
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Gene Slover |
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Posts: 6226 ( 8-Apr-2008 21:03:21) |
Tony D is quite correct.
I will elaborate a little about Korean operations. When launching or retrieving aircraft the carriers and task force would of course turn into the wind. After the operation was completed the carriers would be about 8,000 yds ahead of the task force and this includes the DD's. There would have been no problem with any of the ships in the task force in keeping up with the carriers and in outruning the carriers if all boilers were lit off. This is simply efficiency in operation. |
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Gene Slover |
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Posts: 6227 ( 8-Apr-2008 21:25:00) |
Our bombers were the F2H Banshee and when fully loaded, ( don't really remember but I think could carry something like 7 or 8 thousand pounds).
When they launched off the carrier, we had hydraulic catapults, they would disappear as they dropped down and ground effects were the only reason they did not go into the drink. It took about 4 miles before they could gain enough speed to pull up. Thats more efficiency in operation, they were loaded to the gills as the saying goes. The engines were I think J79 westinghouse at about 3,000 to 3,500 pounds thrust each. Our fighters were F9F Panthers with the same engines. Later mods of the F2H Banshee could carry atomic bombs. Just before they were phased out there was consideration of a larger model with bigger engines but that never happened.
Last Edited By: Gene Slover
8-Apr-2008 21:29:50.
Edited 1 times.
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Gene Slover |
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Posts: 6228 ( 8-Apr-2008 21:28:03) |
The FH-1 Phantom was the first jet fighter to land and take off from a carrier.
This being done in WWII.
Last Edited By: Gene Slover
8-Apr-2008 21:59:09.
Edited 2 times.
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BOBC 59 |
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Posts: 1140 ( 8-Apr-2008 22:49:00) |
Gene Slover wrote: Really? are u sure on that? about WW2 I mean
NUFF SAID BOB
For those that fought for it,Freedom has a taste and meaning ,The protected will never know.
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