Númenórean navy arrives to aid Gil-galad
Event Type: Military/Strategic
Age: 2nd Age - Rings
"Then Tar-Minastir the King sent out a great navy; but it was delayed, and did not reach the coasts of Middle-earth until the year 1700. By that time Sauron had mastered all Eriador, save only besieged Imladris, and had reached the line of the River Lhûn. He had summoned more forces, which were approaching from the south-east, and were indeed in Enedwaith at the Crossing of Tharbad, which was only lightly held. Gil-galad and the Númenóreans were holding the Lhûn in desperate defence of the Grey Havens, when in the very nick of time the great armament of Tar-Minastir came in; and Sauron's host was heavily defeated and driven back. The Númenórean admiral Ciryatur sent part of his ships to make a landing further to the south."
Unfinished Tales, Part 2, Ch 4, The History of Galadriel and Celeborn: Concerning Galadriel and Celeborn
Note again the discrepancy mentioned by Christopher Tolkien in Unfinished Tales, Part 2, Ch 3, The Line of Elros, Kings of Númenor: Notes, Note 9: that while Tar-Minastir is clearly identified as the sender of the navy, he is listed as acceding to the throne only in 1731.