Olynthus Built 1918, 6,688 tons gross, 443½ x 57'; W.W. II service included attachment to the squadron hunting the Graf Spee; sold to Italian owners 1947
Tidepool Built 1963, 14,130 tons gross, 583' x 71'; service included Beira Patrol and 1976 'Cod War'; sold 1982
Tidespring [sister to Tidepool]
Olna Built 1966, 18,582 tons gross, 648' x 84'; still in service in 1985