National Geographic : 1942 Jan
If, Shells and Mines from Soerabaja's Shops Go Down to the Sea to StrengthenIndies Defenses Numerous small craft are being added to the Netherlands Indies Navy each month. With steel from the UnitedStates, aswarm oftorpedo mosquito boats is being built (page 112). Many of these are sent to hideaways in little straits around Borneo and Celebes. The navyyards also areturning outpatrol boats, mine sweepers, mine layers, and other vessels up to 2,000 tons.