Here are just a few:
# Some names can bring bad luck, like Stormtamer or Mary Celeste. Don’t rename the boat either, except with a special ceremony at sea. To name the boat with a word ending in “a” is bad luck.
# Don’t paint your boat dark green or dark blue, the colour of the sea itself.
# No personal grooming onboard.
# No women except naked or semi-naked – the sea likes naked women, hence boat prow carvings.
# Bad luck to set off on Thursdays (God of Storms, Thor’s day) or Fridays (the day Jesus was executed), the first Monday in April (the day Cain killed Abel), the second Monday in August (the day Sodom and Gomorrah were destroyed), and 31 December (the day on which Judas Iscariot hanged himself). Do sail on a Sunday though.
# Don’t use the words “drowned”, “goodbye” or “good luck”.
# Do not take black holdalls onboard.
# Whisky is a landlubbers’ drink – drink rum if you must and always tip the first glass full over the side to appease the sea.
# No whistling or singing into the wind.
# If you meet a redhead before boarding, the only way to mitigate the bad luck is to speak to them before they speak to you.
# No bananas onboard, also no rabbits, nor any reference to rabbits.
# Red sky at night, sailor’s delight; red sky in the morning, sailors take warning.
# Shark following a boat a sign of doom, dolphins running with the ship a good sign, swallows are good, as is the ship’s cat.
# Pay your debts before embarking.
# Never kill an albatross.