Marine Atlantic ferries are crossing between Cape Breton and Newfoundland after two vessels carrying 800 passengers were freed from ice Thursday, but conditions are causing some delays.

Heavy ice increased crossing times by about three and a half hours, per trip, overnight and into the morning.

The MV Highlanders and MV Blue Puttees were trapped by ice Wednesday night near Cape Breton. The Highlanders manoeuvred itself out on Thursday.

The Blue Puttees was helped by another ferry, the MV Atlantic Vision, which was able to clear a path from the North Sydney terminal. 

Marine Atlantic's website says the Atlantic Vision will be about three hours late docking in Port aux Basques this evening. The Blue Puttees will be about half an hour late arriving in North Sydney.