The Ship That Sailed the Time Stream - Ensign Joe Rate, captain of the experimental Navy yawl Alice, figured that everything that could happen to him in one day had already happened. First, after a freak electrical storm at sea the Alice had somehow been thrown a thousand years backward in time, and it looked like they were stranded in the past. They had provisions for 2 weeks at most. Then there was the voluptuous barbarian girl they'd saved from captivity - her presence on board a ship full of normal sailors wasn't likely to lessen the problems of the situation. Then he saw the four Viking raiding ships bearing straight for him, and in a few minutes the first spear thunked into the Alice's foredeck... [Originally half of a 1965 Ace Double, this is the first "single" appearance. This was expanded in 1978 - but I like this version just fine.]