On the way southward, nineteen members of the expedition became separated from the ship and drifted on an ice floe for six months and 1800 mi before being rescued.
The caisson type quickly became the preferred type of lighthouse to be built in climates where ice floe damage was a possibility.
Groups of these have been constantly leaping onto our ice floe.
They prefer to rest on ice floe and will move farther north for denser ice.
The second lighthouse lasted until 1881 when it was forced off its foundations by an ice floe.
As their hope faded, a storm rose up and broke the ice floe, and they returned to the water amid the loose pack ice.
I was out on an ice floe there.
He s about to give up when he sees it drifting away on an ice floe.
