Joe mentioned in 1998 that there was no entry in the Traditional Ballad Index. By now there is:

Just As the Tide Was Flowing
DESCRIPTION: A sailor and girl stop "Beneath the shade and branches round, What they done there will never be known So long as the tides are flowing." She gives him gold. He goes to the alehouse and drinks "to the girl that never said no" or spent it on other girls.
AUTHOR: unknown
EARLIEST DATE: before 1839 (broadside, Bodleian Harding B 11(3634))
KEYWORDS: courting lover sailor gold
FOUND IN: Britain(England(Lond,North,South)) Canada(Newf)
REFERENCES (4 citations):
Wiltshire-WSRO Mi 615, "Just As the Tide Is Flowing"; Wiltshire-WSRO Mi 616, "Just As the Tide Is Flowing" (2 texts)
Kidson-Tunes, pp. 108-109, "Just As the Tide Was Flowing" (1 text, 1 tune)
Greenleaf/Mansfield 66, "Down Where the Tide Was Flowing" (3 texts, 1 tune)
RoudBishop #30, "Just As the Tide Was a-Flowing" (1 text, 1 tune)
Roud #1105
RECORDINGS:
Harry Cox, "Just As the Tide Was A-Flowing" (on Voice12)
BROADSIDES:
Bodleian, Harding B 11(3634), "Just As the Tide Was Flowing," J. Catnach (London), 1813-1838; also Harding B 11(1951), Harding B 11(1952), "Just As the Tide Was Flowing"; Johnson Ballads 1837, "Tide is Flowing"; Firth c.12(274), "Just As the Tide is Flowing"
File: GrMa066