Sunday, December 27, was a quiet day aboard.  The southerly gale was blowing the snow in clouds off the floe and the temperature had fallen to 23° Fahr.  The dogs were having an uncomfortable time in their deck quarters.  The wind had moderated by the following morning, but it was squally with snow-flurries, and I did not order a start till 11 p.m.  The pack was still close, but the ice was softer and more easily broken.  During the pause the carpenter had rigged a small stage over the stern.  A man was stationed there to watch the propeller and prevent it striking heavy ice, and the arrangement proved very valuable.  It saved the rudder as well as the propeller from many blows.

The high winds that had prevailed for four and a half days gave way to a gentle southerly breeze in the evening of December 29.  Owing to the drift we were actually eleven miles farther north than we had been on December 25.  But we made fairly good progress on the 30th in fine, clear weather.  The ship followed a long lead to the south-east during the afternoon and evening, and at 11 p.m. we crossed the Antarctic Circle.  An examination of the horizon disclosed considerable breaks in the vast circle of pack-ice, interspersed with bergs of different sizes.  Leads could be traced in various directions, but I looked in vain for an indication of open water.  The sun did not set that night, and as it was concealed behind a bank of clouds we had a glow of crimson and gold to the southward, with delicate pale green reflections in the water of the lanes to the south-east.

The ship had a serious encounter with the ice on the morning of December 31.  We were stopped first by floes closing around us, and then about noon the ‘Endurance’ got jammed between two floes heading east-north-east.  The pressure heeled the ship over six degrees while we were getting an ice-anchor on to the floe in order to heave astern and thus assist the engines, which were running at full speed.  The effort was successful.  Immediately afterwards, at the spot where the ‘Endurance’ had been held, slabs of ice 50 ft. by 15 ft. and 4 ft. thick were forced ten or twelve feet up on the lee floe at an angle of 45°.  The pressure was severe, and we were not sorry to have the ship out of its reach.  The noon position was lat. 66° 47´ S., long. 15° 52´ W., and the run for the preceding twenty-four hours was 51 miles S. 29° E.

“Since noon the character of the pack has improved,” wrote Worsley on this day.  “Though the leads are short, the floes are rotten and easily broken through if a good place is selected with care and judgment.  In many cases we find large sheets of young ice through which the ship cuts for a mile or two miles at a stretch.  I have been conning and working the ship from the crow’s-nest and find it much the best place, as from there one can see ahead and work out the course beforehand, and can also guard the rudder and propeller, the most vulnerable parts of a ship in the ice.