Completely
different ice conditions are encountered in the Antarctic every
summer, depending on wind and weather. Loose pack ice can quickly
be blown towards land or fast ice and re-form into solid impenetrable
ice. Conditions change rapidly, a constant watch having to be kept
on changing wind and weather patterns.
Broken and loose pack ice was easily navigable by the Biscoe but on
many occasions the ship had to force a passage through thick ice.
Eventually in early January 1964 she became completely icebound near
the Antarctic Circle at a latitude of 66° 30' S.
The ship remained completely iced in until early February, during
which time it drifted hundreds of kilometres with the sea ice. Ice
saws, crow bars and pick axes made no impression on the thick ice.
Eventually open leads allowed the southern journey to progress until
fast ice was again encountered many miles north of the the Base
on the southern tip of Adelaide Island in Marguerite Bay. A tactical
retreat northwards was made for fear of becoming beset.
The map above
left shows the drift of the RRS John Biscoe whilst
stuck in ice for over a month.
All photographs are scans from personally owned slides