Ardilla

Ardilla, 1808.

The "eighteen-gun Spaniard Ardilla… was probably carrying silver when she vanished en route from Louisiana to Spain in 1808." (Quasar, p. 57.)

Obviously, like with the Anne, during the Age of Sail, all kinds of things could happen to ships, and without radios, no one would ever hear about it. Doesn't mean the Martians got her. Doesn't mean they didn't get her, either. Tossup. Think or believe what you want.

USS Pickering

USS Pickering, August 20, 1800.

"The USS Pickering disappeared on August 20, 1800, with a crew of ninety, en route to Guadeloupe in the West Indies from Newcastle, Delaware." (Berlitz, Bermuda Triangle, p. 64.)

"The USS Pickering disappeared on a voyage to the West Indies in 1800, around August 20." (Quasar, p. 55.)

From the Navy:

Brig USS Pickering believed lost with all hands in a gale in Sep. 1800. Last seen 20 Aug. 1800 when she departed for the West Indies. Approximately 105 drowned.