Which sentences in this excerpt from South! show that Shackleton felt his men displayed determination in difficult situations
The conditions in the boat, uncomfortable before, had been made worse by the deluge of water. All our gear was thoroughly wet again. Our cooking-stove had been floating about in the bottom of the boat, and portions of our last hoosh seemed to have permeated everything. Not until 3 a.m., when we were all chilled almost to the limit of endurance, did we manage to get the stove alight and make ourselves hot drinks. The carpenter was suffering particularly, but he showed grit and spirit. Vincent had for the past week ceased to be an active member of the crew, and I could not easily account for his collapse. Physically he was one of the strongest men in the boat. He was a young man, he had served on North Sea trawlers, and he should have been able to bear hardships better than McCarthy, who, not so strong, was always happy…A gentle snow-slope descended at our feet towards a valley that separated our ridge from the hills immediately behind Husvik, and as we stood gazing Worsley said solemnly, “Boss, it looks too good to be true!” Down we went, to be checked presently by the sight of water 2500 ft. below. We could see the little wave-ripples on the black beach, penguins strutting to and fro, and dark objects that looked like seals lolling lazily on the sand. This was an eastern arm of Fortuna Bay, separated by the ridge from the arm we had seen below us during the night. The slope we were traversing appeared to end in a precipice above this beach. But our revived spirits were not to be damped by difficulties on the last stage of the journey, and we camped cheerfully for breakfast. Whilst Worsley and Crean were digging a hole for the lamp and starting the cooker I climbed a ridge above us, cutting steps with the adze, in order to secure an extended view of the country below.
