Avoid people with red hair when travelling to a boat to begin a journey. It is believed that redheads bring bad luck to a ship, which, apparently, can be averted if you speak to the red-headed person before they speak to you.
Every superstitious fisherman's nightmare.
Disaster will follow if you step onto a boat with your left foot first.
Why do I get a sinking feeling about this boat trip?
Flowers are very unlucky aboard a ship. It is said that they could later be used to make a funeral wreath for the dead and therefore become a symbol that someone could die on the voyage.
"Say Robbie, that was damned unfortunate that old Davie passed away on this voyage. At least we were lucky enough to have all these nice flowers aboard to give him a proper send off".