USN Cruiser availability
USN Cruiser availability
Hello,
I was doing some research on the cruiser and battleship availability during the war.
So I began to make diagrams, since it appears to be the most readable presentation
Below is a first part, dealing with the US 8-inch cruisers (since it's very time-consuming, I don't know when I will be able to follow on with other navies)
Green : Pacific/Indian
Light green : Atlantic/Mediterranean
Red : sunk
Orange : combat damage
Light blue : shakedown/training
Purple : dockyard/repair/refit/overhaul/ post-repair training
grey : building
I was doing some research on the cruiser and battleship availability during the war.
So I began to make diagrams, since it appears to be the most readable presentation
Below is a first part, dealing with the US 8-inch cruisers (since it's very time-consuming, I don't know when I will be able to follow on with other navies)
Green : Pacific/Indian
Light green : Atlantic/Mediterranean
Red : sunk
Orange : combat damage
Light blue : shakedown/training
Purple : dockyard/repair/refit/overhaul/ post-repair training
grey : building
Olivier
Re: USN Cruiser availability
Here is the same study for the light cruiser (6-incher).
Note that the Omaha are excluded.
Only the ships which saw action during the war are represented here (both for 'heavy' and 'light' cruisers).
Note that the Omaha are excluded.
Only the ships which saw action during the war are represented here (both for 'heavy' and 'light' cruisers).
Olivier
Re: USN Cruiser availability
I see the CL list includes the 5" armed Atlanta's as well. Nice chartes. Why did you exclude the Omaha's?
Re: USN Cruiser availability
Oh yes, the split was between "8-inch" and "less-than-8-inch".
I excluded the Omaha mainly because they were 'second rate' cruiser (that is not to say that they were 100% garbage, but that the Navy relatively quickly found out that they were of limited use against IJN.
(AFAIK, Komandorski Island was the only time a Omaha was in action against IJN.)
And the starting point of my study was to check which ships were available for the Guadalcanal campaign after Tassafaronga, and committing the Omahas was taking huge risk of losing them.
Moreover, in a less rationalized way, I have not as much data on those ships than on other classes
I forgot to mention in the first post that some of the data may be doubtful or incomplete.
They are also imprecise because I did not go under the month as basic time unit, and I made some 'rounding' : for example, a ship in yard from 04/06 to 20/07 will probably appear in purple during june and july, even if it's in action on 25/07.
I excluded the Omaha mainly because they were 'second rate' cruiser (that is not to say that they were 100% garbage, but that the Navy relatively quickly found out that they were of limited use against IJN.
(AFAIK, Komandorski Island was the only time a Omaha was in action against IJN.)
And the starting point of my study was to check which ships were available for the Guadalcanal campaign after Tassafaronga, and committing the Omahas was taking huge risk of losing them.
Moreover, in a less rationalized way, I have not as much data on those ships than on other classes
I forgot to mention in the first post that some of the data may be doubtful or incomplete.
They are also imprecise because I did not go under the month as basic time unit, and I made some 'rounding' : for example, a ship in yard from 04/06 to 20/07 will probably appear in purple during june and july, even if it's in action on 25/07.
Olivier
Re: USN Cruiser availability
Excellent job!
My father served aboard USS BOSTON and the dates presented appear to be right on.
My father served aboard USS BOSTON and the dates presented appear to be right on.
Re: USN Cruiser availability
I have an other view of the same data.
However the focus is on the Pacific, I did not take into account the USN ships when they were in the Atlantic.
But I tool into account the RAN cruisers which were in the Pacific cooperating with the USN (for example HMAS Shropshire appears in oct 1943, but HMAS Adelaïde in not taken into account since whe remained under RN/RAN control through the war)
Note also that a ship is counted available for a month if it is available the first day of this month (USS Juneau is in the Nov 42 count,for ex.)
Here is a first version, by number of ships :
And the same data, this time viewed by tonnage :
However the focus is on the Pacific, I did not take into account the USN ships when they were in the Atlantic.
But I tool into account the RAN cruisers which were in the Pacific cooperating with the USN (for example HMAS Shropshire appears in oct 1943, but HMAS Adelaïde in not taken into account since whe remained under RN/RAN control through the war)
Note also that a ship is counted available for a month if it is available the first day of this month (USS Juneau is in the Nov 42 count,for ex.)
Here is a first version, by number of ships :
And the same data, this time viewed by tonnage :
Olivier
Re: USN Cruiser availability
Hello,
I finally completed the charts for the Omaha-class light cruisers.
The color code is the same as in the previous charts.
The geographic tags reads as follows :
A : Atlantic (actually, most of the Omaha's service in the Atlantic was in South Atlantic)
M : Mediterranean
EP : East Pacific
CP : Central Pacific
SP : South Pacific
NP : North Pacific
EI : East Indies
JW : Japanese Waters
IO : Indian Ocean
T : Training ship
U : unavailable
W : Withdrawn from service (USS Milwaukee, when transfered to the Soviet Red Fleet as Murmansk).
I finally completed the charts for the Omaha-class light cruisers.
The color code is the same as in the previous charts.
The geographic tags reads as follows :
A : Atlantic (actually, most of the Omaha's service in the Atlantic was in South Atlantic)
M : Mediterranean
EP : East Pacific
CP : Central Pacific
SP : South Pacific
NP : North Pacific
EI : East Indies
JW : Japanese Waters
IO : Indian Ocean
T : Training ship
U : unavailable
W : Withdrawn from service (USS Milwaukee, when transfered to the Soviet Red Fleet as Murmansk).
Olivier
Re: USN Cruiser availability
Hello,
I completed the charts I made in the first posts of this thread with a geographic tag for each month and each ship, giving more precision on its whereabouts.
You will find these charts below.
The tag code is the same one as used previously for the Omahas.
I just added the 'PI' label for the waters around the Philippines, and the 'UD' label, to help distinguish between unavailability provoked by enemy action and 'standard' unavailability.
I completed the charts I made in the first posts of this thread with a geographic tag for each month and each ship, giving more precision on its whereabouts.
You will find these charts below.
The tag code is the same one as used previously for the Omahas.
I just added the 'PI' label for the waters around the Philippines, and the 'UD' label, to help distinguish between unavailability provoked by enemy action and 'standard' unavailability.
Last edited by mescal on 23 Oct 2010, 19:48, edited 1 time in total.
Olivier
Re: USN Cruiser availability
And after the heavy cruisers in the previous post,
here are the light cruisers :
(color codes and labels are still the same)
here are the light cruisers :
(color codes and labels are still the same)
Olivier
Re: USN Cruiser availability
Incredible! I commend you. This is a first rate piece of work.
Re: USN Cruiser availability
Thank you James.
And below are the synthetic numbers of ships per geographic area and per month.
Each value represents the total number of cruiser which have the line label for the given month.
Hence no distinction is made between a Omaha and a Baltimore - so take these values with a grain of salt...
The labels are the same as in the previous posts.
The 'B' line represents the ships under construction which had or could have had front line duties before the end of war - that's why this line ends with zeroes, which does certainly not mean that no US cruiser were under construction in the summer of 1945.
The 'grand Total' is the sum of the ships in ETO, PTO, unavailable and in training.
And below are the synthetic numbers of ships per geographic area and per month.
Each value represents the total number of cruiser which have the line label for the given month.
Hence no distinction is made between a Omaha and a Baltimore - so take these values with a grain of salt...
The labels are the same as in the previous posts.
The 'B' line represents the ships under construction which had or could have had front line duties before the end of war - that's why this line ends with zeroes, which does certainly not mean that no US cruiser were under construction in the summer of 1945.
The 'grand Total' is the sum of the ships in ETO, PTO, unavailable and in training.
Olivier
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Re: USN Cruiser availability
Nice ! Color coding charts for USN cruisers...
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- Member
- Posts: 1256
- Joined: 31 Jul 2010, 07:39
- Location: Philippines
Re: USN Cruiser availability
A Baltimore-class heavy cruiser...