NAV

Can't you persuade this girl of ours to give up the co-ed plan back yonder in Annapolis,—she knows all the seamanship and nav.

In either case popular imagination pictured the nav a long distance away.

The ship of Nevydd Nav Neivion, who carried in it a male and a female of all living, when the lake of waters burst forth.

If nav was a ship at all, I am at a loss to know why it should be "a much older term."