South Africa operates three Lillian Ngoyi-class environmental patrol vessels, based on the Damen Stan 4708 design.

[1] The vessels are named Lillian Ngoyi, Ruth First and Victoria Mxenge.

[2][3] The vessels were constructed in South Africa by Farocean Marine.

[3] The United States Coast Guard later decided to acquire up to 58 Sentinel-class 154 ft (47 m) fast response cutters (FRC), also based on the Damen Stan patrol vessel 4708 design, citing the success of the South African vessels.

[1]