There were some rather amusing stories about the detention of ships in the Firth. A Newcastle shipowner had despatched two ships from that port by the same tide, one to Bombay by the open sea, and the other, via the Pentland Firth, to Liverpool, and the Bombay vessel arrived at her destination first. Many vessels trying to force a passage through the Firth have been known to drift idly about hither and thither for months before they could get out again, and some ships that once entered Stromness Bay on New Year's Day were found there, resting from their labours on the fifteenth day of April following, "after wandering about like the _Flying Dutchman_." Sir Walter Scott said this was formerly a ship laden with precious metals, but a horrible murder was committed on board. A plague broke out amongst the crew, and no port would allow the vessel to enter for fear of contagion, and so she still wanders about the sea with her phantom crew, never to rest, but doomed to be tossed about for ever. She is now a spectral ship, and hovers about the Cape of Good Hope as an omen of bad luck to mariners who are so unfortunate as to see her.

The dangerous places at each end of the Firth were likened to the Scylla and Charybdis between Italy and Sicily, where, in avoiding one mariners were often wrecked by the other; but the dangers in the Firth were from the "Merry Men of Mey," a dangerous expanse of sea, where the water was always boiling like a witch's cauldron at one end, and the dreaded "Swalchie Whirlpool" at the other. This was very dangerous for small boats, as they could sail over it safely in one state of the tide, but when it began to move it carried the boat round so slowly that the occupants did not realise their danger until too late, when they found themselves going round quicker and quicker as they descended into the awful vortex below, where the ancient Vikings firmly believed the submarine mill existed which ground the salt that supplied the ocean.

From John O'Groats to Land's End — Part 27

We ought not to have read these dismal stories just before retiring to rest, as the consequence was that we were dreaming of dangerous rocks, storms, and shipwrecks all through the night, and my brother had toiled up the hill at the back of the town and found Bessie Miller there, just as Sir Walter Scott described her, with "a clay-coloured kerchief folded round her head to match the colour of her corpse-like complexion." He was just handing her a sixpence to pay for a favourable wind, when everything was suddenly scattered by a loud knock at the door, followed by the voice of our hostess informing us that it was five o'clock and that the boat was "awa' oot" at six.

From John O'Groats to Land's End — Part 27