Category: Multimedia

#Knowledge Round 6: Ocean depths

While deep-sea trenches are usually elongated trenches, a sea low is only a relatively small area of sea that lies partly in such a trench. Some of the deepest areas are Challenger Deep in the Mariana Trench (10,984 m; Pacific Ocean) Milwaukee Deep in the Puerto Rico Trench (8,376 m; Atlantic Ocean) Diamantina Fracture Zone (7099 m; Indian Ocean) Molloy Deep (5,669 m; Arctic Ocean) Calypso Deep (5,267 m; Mediterranean Sea) Norwegian Trench (725 m, North Sea) Landsort Deep (459 m;...

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#Knowledge Round 4: Sailor's greeting

This greeting is also called dipping. It consists of lowering and raising the national flag. Merchant ships are obliged to give the first salute to warships of all countries. The dipping salute is not given between warships because it is derived from striking the sails (or striking the flag; handing the ship over to the enemy), the sign of subordination and submission. The salute commonly used between warships is the...

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#Knowledge Round 3: Elms fire

The St Elmo's Fire (or St Elmo's Fire for short) is a rare light phenomenon caused by electrical discharges during thunderstorms. St Elmo's fire occurs on exposed, high objects, such as ship masts. It resembles small, tufted lightning bolts that flicker around the object with a typical buzzing sound. Saint Elmo's fires are caused by corona discharges in the atmosphere. St Elmo's fires glow blue-violet due to oxygen and nitrogen in the earth's atmosphere. St Elmo's fire was first observed at churches of St Erasmus. The name is therefore derived from St Erasmus of Antioch (Italian: Elmo), who was invoked by sailors in stormy weather. A St Elmo's fire on the mast was rightly interpreted as an ominous sign, because...

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#Knowledge Round 2: The Klabautermann

No ship should set sail without a good ship's spirit: The Klabautermann is a goblin who protects the ship. His name is derived from the former name of the ship's carpenter, the Kalfatermann. Calfing is still the name given to the sealing of the ship's planks today. At night, the Kalfautermann walks around the ship and taps it for rotten and damaged areas. The saying goes: If you hear him knocking, he stays. But if you hear him planing, he leaves. The latter is not good at all, because then the ship is about to sink. However, the invisible troll gives the captain one last warning...

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