As well as a 30 mm gun, the 90.5m OPV’s carry fast interception rigid inflatable craft and a 20 metre helicopter landing deck aft. The aft deck can also serve to carry a combination of containers, stores, vehicles, scientific research equipment or other cargo. The OPV specification includes a 16 ton crane for loading and unloading.

In its most recent patrol vessel order MAN Diesel is to produce the first 12 cylinder versions of the 28/33D. A total of eight of the 5.4 MW rated 12V 28/33D have been ordered for four 108m craft to be built by Schelde Naval Shipbuilding of Vlissingen in the Netherlands for The Royal Netherlands Navy. The engines drive controllable pitch propellers via reduction gears and give the vessels a 22 knot top speed. A special power-take-in (PTI) feature on the gears consists of an electric motor mounted on a stub shaft. With the main engines disconnected or shut down, the motor is driven from the patrol auxiliary gensets to provide very low speed propulsion.

The four patrol vessels are scheduled for delivery between November 2010 and November 2012 and will operate both off the Netherlands and for fixed duration missions around the Netherlands Antilles and Aruba. When a Caribbean mission is completed, the patrol vessel is relived by one of its sister ships and returns to the Netherlands for servicing. The vessels are described as a robust platform with limited weaponry, specifically designed for coastal patrol missions and maritime defence. For interceptions the patrol vessels carry both a helicopter and high speed rigid inflatable interceptor craft.