ORIGINAL: Ian R
I reckon the trick is to park them in the deeper water east of Borneo - then you get to use them for longer. They can transit from an AS in Darwin, with some trips to the shipyard at Fremantle as needed.
You can even use them to suck up fuel that is left in isolated bases not IJ occupied.
Early on, the Dutch subs usually run out of torps before they run out of fuel. There are just so many IJ TFs running around the SRA.
You are right about the deep water being safer, but the smallest Dutch boats are quite maneuverable and can get away with a lot in shallow waters in the first few months because IJ ASW weapons are so poor, and their smaller escorts are not as experienced or well-led as the fleet DDs.
They need the AS to reload torpedos, hence parking one in Darwin, but there is fuel all over the joint.
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