–from Ernest Shackleton’s account, “South”–
“The sun sank lower in the sky, the temperatures became lower, and the ‘Endurance’ felt the grip of the icy hand of winter. Two north-easterly gales in the early part of April assisted to consolidate the pack. The young ice was thickening rapidly, and though leads were visible occasionally from the ship, no opening of a considerable size appeared in our neighbourhood.
“In the early morning of April 1 we listened again for the wireless signals from Port Stanley. The crew had lashed together three 20-ft. rickers to the mast-heads in order to increase the spread of our aerials, but still we failed to hear anything.”