One interesting phenomenon that seemed to defy our sensibilities while paddling one day in a crosswind was watching an iceberg go scooting smartly past us at right angles to our direction of travel; it was like it had a motor attached to it and a destination in mind.
It took a while to make sense of the physics behind this illusion: in a kayak, which has a very shallow draft, is mostly above water, barring a strong current, is primarily affected by the wind, which was pushing us crosswise downwind. However, an iceberg is 85% below water, and affected far more by moderate currents than even strong winds, the current in this instance going against the wind.
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