Riverkeeper maintains a 36-foot (11-m) wooden patrol and research vessel, the R. Ian Fletcher, operated by Boat Captain, John Lipscomb.

Under the new arrangement, the patrols will operate at least eight hours every day on a special anti-suicide mission.

On 14 December 1971, a message was received from Headquarters, 45th Infantry Brigade that they had intercepted a message that its own patrols were operating deep into enemy territory.

In February 1942, she commenced patrols to the south and for the next year operated primarily from Guantanamo Bay and Key West, Florida.

By 1991, the RUC acknowledged that no mobile patrols had operated in South Armagh without Army support since 1975.

The patrols last operated in 1975.

The patrols operate Monday to Friday, 6 A.M. to 6:30 P.M.

There were no land mines along the unguarded shore, and the guards and patrols only operated inland.

Mitford's patrol was operating close to Uweinat when it was spotted by an Italian bomber.

Today many American patrols operate independently.