Post by Rich Rostrom60,000 deadweight tons (DWT) of shipping
continuously used for the Italian part of "National
Government Import Programs for Liberated Areas"
French North Africa, North France and Belgium were
200,000 DWT each, South France 70,000.
As for military in the Pacific, the South West
Pacific area budget was proposed to be 900,000 DWT,
the central Pacific 1,500,000 DWT...
<snip extremely informative discussion of Allied
shipping allocation and usage>
I don't think this can be evaluated purely in "tons
of shipping". What's needed is to find the tonnage
delivered to various points, and the distance that
tonnage had to travel, and also the tonnage and speed
of available Allied freighters. That is, ton-miles
used, and ton-miles available.
You could do that, the alternative is as presented, the amount
of shipping on operation on the given trade route, which is
expected to deliver the desired amount of cargo.
The figures I have indicate tonnages delivered for the
relevant theatres, they are actually quarterly in the histories.
One important note is the world's merchant fleet existed
because there was trade to carry, while civil needs for
imports and surpluses requiring export could be reduced
during the war they were still substantial.
Also I cannot find a figure for how much of the Italian
merchant fleet made it to allied ports in September 1943.
Post by Rich RostromFor instance, Lend-Lease materiel delivered to the
USSR via Iran. The voyage through the Med is short
than the voyage around Africa. How much shorter
(bearing in mind that the Mediterranean route has
to pass down the Red Sea and around Arabia)?
According to the US in 1943 from New York to the near
east via the Cape of Good Hope and back again took
210 days. Via the Mediterranean in 1944 it was 109
days. About 10 days at each end was the planned
time allowed for loading and then unloading. So the
voyage time was around 190 days via the Cape and
90 days via the Mediterranean.
New York to the Mediterranean theatre was 78 days
in 1943.
San Francisco to the Southwest Pacific was 115 days,
actually faster than to the South Pacific which took 134
days. Distance mattered but so did port facilities and
the willingness/ability to clear and return ships.
Charleston to India was 185 days in 1943.
Post by Rich RostromHow many tons were delivered by that route? Thus, how
many ton-miles saved?
The shipping schedule, US to Persian Gulf, set at the
Casablanca conference was for 126 sailings in the
first 6 months of 1943, actual was 75 full and 15 partial
ship loads, 553,000 tons.
After starting in November 1941 shipments to the USSR
via the Persian Gulf to end June 1943 were 1,272,000
long tons, this took 168 sailings plus minor parts of the
cargo of another 74 sailings.
The last ship with material for the USSR via the Persian
Gulf left the US in January 1945 (the Black Sea route
was being opened), a few ships to May 12th carried part
cargoes.
All up 373 full sailings, 2.9 million long tons of cargo,
end 1941 to early 1945.
The Black Sea route adds 76 ships 672,000 long tons
of cargo, final sailings were in August 1945.
So say at most 2.2 million long tons were able to use
the Mediterranean, mainly in 1944.
Post by Rich RostromHow much war materiel was shipped to or from India?
Unknown, the US army shipped 6.4 million measurement
tons (40 cubic feet of cargo space, versus 100 cubic feet
for a register ton)
This is out of 126.8 million measurement tons shipped
from the US to overseas destinations including Alaska.
The British military would have shipped more to India but
note a key part of pre and early war planning was building
up war industries in the area which did happen, with Italy
looking hostile the Mediterranean route was assumed to
be closed in the early part of the war at least.
Post by Rich RostromShipments _to_ US/UK forces in the Middle East would
be trivial after the end of the North African campaign
in May 1943. But what about shipments of oil _from_
the Middle East? There were pipelines from the oil
fields to the Med; use of them would be an additional
saving.
Middle East oil tended to go to the Middle East, India
and Australia, the US and Caribbean supplying Europe.
By destination in May 1944 the allied tanker fleet in
Gross Register Tons, ships over 1,600 GRT, was
distributed as follows,
2.2 million with the navies,
1.7 million under repair, refit etc.,
3.3 million supplying England, Iceland and the USSR,
1.4 million Western Mediterranean, Azores and West Africa,
2 million Pacific including the Vladivostok run,
2 million US and Canadian Eastern Seaboard,
2 million other Western Hemisphere,
1.8 million "Indian Ocean", including Libya, East and South
Africa, India, Ceylon, Australia, New Zealand,
total 16.9 million
Apparently the tanker fleet in the Indian Ocean stayed
around 1.7 to 1.8 million tons for most of the war.
Post by Rich RostromShipments to and from Australia via the Indian Ocean
also figure into it.
There were no major movements of troops or equipment
from the second half of 1943 onwards. Civil cargo as
planned for the first 6 months of 1944 saw the UK shipping
around 600,000 tons of such cargo to the Middle East, India,
Ceylon, New Zealand and Australia. All up the UK was
going to ship 982,000 tons of essential civil supplies in the
6 months to Africa, the Middle East and Indian Ocean areas.
The US was going to ship 2.4 million tons (0.9 of that to
Australia and New Zealand, 0.2 to North Africa, 0.4 to
South Africa)
Another 2.7 million tons of civil supplies was going to be
moved between Africa, the Middle East, Australia and New
Zealand from local production. And another 0.2 million
tons would be imported into the above areas from South
America.
So to meet the areas civil needs required planning to move
about 12.5 million tons of cargo in 1944 of that around 1.2
million of the UK and 1.4 million from the US would probably
benefit from having the Mediterranean open, then comes
any return cargo.
The US military loads to India seem to have had plenty of empty
ships on the return voyage, though this is in part due to the
military wanting them back immediately and cross trade
voyages could add weeks to round trip times.
The UK import plan for 1944 wanted around 2.6 million tons
from "East of Suez" and had actually imported 1.5 million to
end June (versus over 6 million tons from North America)
Post by Rich RostromI guess the balance comes down to this.
Suppose the US/UK decide that after the African
campaign, they will take Sardinia and Corsica to
enable the invasion of southern France, but will
not invade Sicily or mainland Italy.
The Mediterranean remains closed to Allied shipping,
so shipments to and from iran, the Middle East, India,
and Australia require more ton-miles to deliver.
You can add the allied forces in North West Africa,
they would be supplied from the US/UK, rather than
the Middle East.
Post by Rich Rostrom_But_ the Allies do not have to supply an army group
fighting in Italy, nor provide relief for Italian
civilians (except in Sardinia), saving all the
ton-miles used in those activities.
How much of an air force is left to guard Africa, also
navy and army? Removing the Italian fleet from axis
control makes things a lot easier, otherwise what is
to stop the axis mounting at least raids on allied Africa?
Taking Sicily opened up the shipping lanes, taking
southern Italy, Sardinia and Corsica made them much
safer, also allied aircraft in the newly taken areas could
attack important targets, including the beaches of southern
France while being able to also attack any axis attempt
to retake the territories. What important targets could
allied forces in North Africa hit? How much infrastructure
would be needed to maintain credible forces that make
any axis attack from Sicily etc. too expensive?
Post by Rich RostromWhich number is greater?
To answer that question you need to for example decide
how to account for the 15th Air Force, (an addition to the
what if is that it is unlikely Britain could have found room
for the 8th and 15th Air Force)
The US army reports it shipped 27.7 million measurement
tons to the Mediterranean Theatre, Central Africa and
the Middle East, which would include the Air Force, which
reports it shipped 3.9 million measurement tons to the
Mediterranean by water
So 11 million GRT of cargo with about 1.6 million for the
air force. Maybe 8 million long tons of cargo, the British
would ship comparable amounts. Then add the civil
relief to the newly liberated areas. In crude terms say
around 6 million tons of supplies in 1944 for the allied
military, say another million tons for the Italian civilians.
Apart from opening the Mediterranean there are the gains
of making North Africa safe, removing the Italian forces
from the axis side and opening up Austria, Southern France
and the Balkans to air attack. And Southern France to
invasion.
Think you now have a "simple" equation? The British
Merchant Shipping History says the allies shipped
around 2.1 million tons of civil relief supplies to the
Middle East in 1942 from the UK and US but part of
the cargo was for the military. It also indicates about
half the cargo was at no or little cost to overall shipping
capacity, as it was shipped in the available spare space
present in military cargo sailings.
Remember Full and Down? The ideal of hitting the weight
limit at the same time as hitting the cargo volume limit?
That usually required a mixture of cargo.
Or putting it another way crating vehicles could in theory
increase the number carried in a given ship by around 6
times, at a very real cost in time and effort and facilities at
both ends to crate and uncrate the vehicles. What the above
equation ignores is vehicles were light and you could always
pack cargo in and around them. (Crating tanks does not
save much space).
So in the savings column goes the shipping on Middle East
etc. civil relief, and the fact the use of spare capacity in
military sailings would have continued into 1943 and beyond.
It would appear in military capacity the allies paid a price to
keep fighting in Italy greater than the merchant ship capacity
saved by opening up the Mediterranean. Throw in the civil
cargo movements and things change.
So if we hand wave things to say a cost of 7 million tons
a year of extra civil and military shipments to Italy, less
whatever you allocate to formations like the 15th Air Force,
in 1944 you are going to halve the time it takes to move
around 2.6 million tons of civil cargo to the Middle East
and beyond (US to Australia and New Zealand assumed
via Pacific) about 1.8 million tons of Lend Lease to the
USSR plus the military shipments to India (US army
maybe 0.7 million tons, I would expect the British to
match that), plus further exports to Australia and New
Zealand. So 2.6+1.8+1.4 is 5.8 million tons, "savings"
as each ship should in theory do 2 voyages instead of
1 is about 11.5 minus 7, so 4.5 million tons.
Another figure to throw in is the planned number of sailings
from the UK and US in the first half of 1944 as part of the
military program were 210 to India versus 443 to the
Mediterranean implying a ratio of about 2 to 1, so if
the Mediterranean was sent 6 million tons, India was sent
approaching 3 million or double the 1.4 million used above.
Note the cargo would include Lend Lease material.
And now is about the time to mention all the times the UK
Merchant Shipping history makes it clear calculations of
cargo capacity are complex and many of the figures needed
to do calculations on efficiencies were not recorded.
How much shipping was saved? I am confident more
than was used to maintain the fighting in Italy, even before
we talk about deducting tonnages for the 15th AF etc. I
wonder it was around 4 or more million though. Half of
that brings us nearer to the upper estimates of 1 to 2
million tons often mentioned, but of course the shipping
routes open would drive an increase in cargo movements,
that is material being moved that would have been ignored
had less shipping capacity been available. The more
cargo shipped the more "savings".
The US shipped about 870,000 tons of grains to India in
1945, previously grains had been mainly from Australia,
though of course harvests fluctuated.
Post by Rich RostromBTW, I wonder where did Allied relief for Italy go?
How much to Sicily, how much to Sardinia, how much to
the mainland? I'd guess that Sardinia didn't need or
get much.
It would be mostly population dependent but it would vary
according to the local economy, including how much
damage had been taken, Naples was not a very livable
city at the end of 1943. The figures I have are only at
theatre level, you would need to look at histories of allied
management of liberated areas.
Geoffrey Sinclair
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