The sea was calm for some time but the weather looked uncertain. Toward noon we ran into a heavy rain squall with a rougher sea than any we have had and according to the crew approximated the conditions of the run from Hong Kong to Manila. The rain stopped toward evening but the heavy seas continued. We failed to pick up the light on the southern end of Mindanao peninsula or sight land during the night. Ted and I took turns on lookout. From midnight to 4 AM there was little moon, and difficult to see land if there had been any.