HHH#167615 Icebreaker bow confronts 10/10ths sea ice with melt pools on surface. Photo: Colin Monteath

HHH#223251 Passenger excited to be in heavy pack ice, Ross Sea.

HHH# 250353 Ice-strengthened tourist vessel Marina Svetaeva in two metre thick sea ice, McMurdo Sound, Mt Erebus, Ross Island on horizon

HHH movie clip#1722 Ice-strengthened bow cutting sea ice, Ross Sea.

HHH movie clip#1378 Cruising through open pack ice, midnight sun, Ross Sea

HHH#176670 Motor yacht Itasca confronts large iceberg, Antarctic Peninsula Photo: Colin Monteath

HHH#174858 Nuclear-powered icebreaker Sovetsky Soyuz breaking 5 metre thick sea ice en route Geographic North Pole Photo: Colin Monteath

HHH#213949 Looking down on helicopter deck as ship breaks through pack ice, Ross Sea

HHH#247977 Ice-strengthened motor yacht Itasca, Port Lockroy, Weincke Island, Antarctic Peninsula

HHH#253459 Sunset over open pack ice, East Antarctica

HHH#189791 Cruise ship Explorer under (now sunk) iceberg arch, Antarctic Peninsula

HHH#194053 Private motor yacht between iceberg reflections

HHH# 189797 Fifty passenger cruise ship pushes through open pack ice and small icebergs at sunset, Antarctic Peninsula

HHH#224747 They were a ghastly crew...so we marooned them on an ice floe, Petermann Island, Antarctic Peninsula

HHH# 247993 Motor Yacht Itasca framed in iceberg arch, Antarctic Peninsula. Photo: Colin Monteath

HHH#133284 Zodiac full of cruise passengers explores Curtiss bay, Antarctic Peninsula. Photo: Colin Monteath

HHH# 173769 US Coast Guard icebreaker bow cutting heavy sea ice, McMurdo Sound, Ross Sea Photo: Colin Monteath

HHH# 250091 Passengers on bow Marina Svetaeva as it approaches North Victoria Land Cape Adare, northern Ross Sea Photo: Colin Monteath