They are. The mines wells and mine laying equipments of the Saphir class subs are located outside of the pressurised hull. The easiest way to use them would be to use containers shaped like the regular HS-4 mines. At over 1,000 kg each and over 1m diameter, they can countain quite some supplies. Make these containers floating and the sub can expel them in harbor without even surfacing, making it completely safe.
They are. The mines wells and mine laying equipments of the Saphir class subs are located outside of the pressurised hull. The easiest way to use them would be to use containers shaped like the regular HS-4 mines. At over 1,000 kg each and over 1m diameter, they can countain quite some supplies. Make these containers floating and the sub can expel them in harbor without even surfacing, making it completely safe.
gb, the air evacuation out of the Philippines...are all of the 750 personnel coming from Bataan, or is it just the wounded?
wounded and other personnel coming from both Bataan and the forts (which are being bombed daily at this point), with priority going to people that the Army and Navy needs.
750 personnel a week is a sizable chunk of folks who won't have to worry about any sort of a Bataan Death March...and bringing in key spares, medical supplies, and some ammunition (at this point my priority would to keep the tanks and Bren gun carriers operational)
also at some point, when does a Pusan Perimeter defense position get formed?
1) a fallback position once the Japanese finally get some heavy and super-heavy artillery in position and
2) something that would keep the forts out of artillery range for a few more weeks...use unserviceable tanks as pillboxes on the final line...
eventually the Bataan peninsula is going to fall, but who is going to be left in it? the longer the battle goes on, the larger the quantities of butterflies...
historically, there were nearly 10,000 men in the hospital from malaria and malnutrition at the time the defense was overrun during the final Japanese offensive, so 750 a week won't deplete the defense too badly
and that airlift only works as long as the Japanese don't do anything to interfere with it by taking Java, Celebes, Timor etc
Recovering from a heavy blow
The arrival of the large submarines Narwhal and Nautilus gives larger than average submarines for blockade running missions and Bellinger soon requests the Argonaut, Barracuda, Bass, and Bonita be converted for blockade running duty before they are transferred to the South Pacific. None of these boats reach the theater until June 1942. Another 8 former Asiatic Fleet submarines are also assigned this duty. The submarines carry supplies in, although only a few tons at a time, but carry out the most critical and important personnel, including the remaining senior officials of the Filipino government at Corregidor and numerous specialists including all of the code breaking staff and nurses by the end of the siege.
From the perspective of the US in January 1942 if the USS Argonaut, Barracuda, Bass and Bonita won't make it to Australia until June 1942, what is the point? It would be extraordinarily optimistic of the US commanders to expect in January 1942 that the US forces in the PI would withstand at least a 6 month siege with only a small trickle of supplies coming in followed by a slightly larger trickle after these 4 subs make their way to Australia. And if these subs are being repurposed, what subs are going to be tasked in the future for Marine Raider actions (Argonaut and Nautilus took part in the Makin Island raids).Recovering from a heavy blow
{snip}
The arrival of the large submarines Narwhal and Nautilus gives larger than average submarines for blockade running missions and Bellinger soon requests the Argonaut, Barracuda, Bass, and Bonita be converted for blockade running duty before they are transferred to the South Pacific. None of these boats reach the theater until June 1942. Another 8 former Asiatic Fleet submarines are also assigned this duty. The submarines carry supplies in, although only a few tons at a time, but carry out the most critical and important personnel, including the remaining senior officials of the Filipino government at Corregidor and numerous specialists including all of the code breaking staff and nurses by the end of the siege.
From the perspective of the US in January 1942 if the USS Argonaut, Barracuda, Bass and Bonita won't make it to Australia until June 1942, what is the point? It would be extraordinarily optimistic of the US commanders to expect in January 1942 that the US forces in the PI would withstand at least a 6 month siege with only a small trickle of supplies coming in followed by a slightly larger trickle after these 4 subs make their way to Australia. And if these subs are being repurposed, what subs are going to be tasked in the future for Marine Raider actions (Argonaut and Nautilus took part in the Makin Island raids).
EDIT: Since the US planners would know that there is no way for the US to have sufficient strength and a fleet train assembled to be able to relieve the PI for at least another year or more after June 1942.
I agree with all of this, as these boats can be spared from the anti-shipping war. Before you get too excited, be advised that Argonaut, Narwhal, and Nautilus were large boats , thus slow divers and they handled poorly while submerged. They also make great sonar targets. If they get caught by ASW escorts during a run in or out there is a good chance they will get nailed. The B-boats were old and in sad shape by the time the war had broken out, indeed all three had been laid up in reserve for several years. They were slow on the surface and were a mechanical nightmare. All of these boats were of riveted construction, which make them leak fuel like a sieve and leaves them vulnerable to depth charge damage. The probability of losing at least one on a run to the P.I. is high. But when all is said, these six boats, supplemented by the other 8 as needed are better than nothing.
Will be interesting to see the strategy that Nimitz and Ike come up with.
Will there be a focus on defending Aus then back to Phil like McArthur otl or more of the central Pacific as Nimitz wanted.
A quicker start to the central Pac might get to the Marianas sooner.
But of course, if US troops are still holding out on Bataan then the pressure will be to set up relief for them.
This timeline and the for DEI will be interesting to see how it plays out.
Would be awesome if Japanese surrender before Aug 1, 1945.