Surabaya, BRIN Public Relations. The National Research and Innovation Agency (BRIN) through the Hydrodynamic Technology Research Center (PRTH) and the Surabaya Hydrodynamic Technology Laboratory received a visit by the Head of the Indonesian Navy’s Research and Development Office (KADISLITBANGAL). The visit was in the context of following up on the cooperation in the construction or building of Patrol Vessels.

These patrol vessels, also known as Offshore Patrol Vessels (OPV), will be used to monitor Indonesian waters and strengthen the primary weapons system in the Indonesian Navy. During their visit, the Indonesian Navy reviewed and witnessed the hydrodynamic testing of OPV 90 ships at BRIN’s Hydrodynamic Technology Laboratory, Friday (11/03).

The seakeeping and manoeuvring demo tests were carried out in the MOB (Manoeuvring Ocean Basin), then continued with discussion on the various results of tests on the OPV model.

Seakeeping test is a ship model test that aims to obtain data on the manoeuvring ability of ships or other floating structures when facing ocean waves from various directions.

While the ship model manoeuvring test aims to obtain data on the diameter of ship when it turns. Manoeuvring test is carried out in the PRTH test basin.

Head of the Surabaya BRIN Office, Muryadin, in his presentation shared various results of test on the OPV ship model such as resistance, self-propulsion, seakeeping and manoeuvring tests.

“The resistance test is the force imposed on the ship when it moves forward at a certain speed. The test is carried out at a speed of 14-31, after the test, an extrapolation process is carried out to get data of measured tests and the results of the extrapolation,” explained Muryadin.

In addition, there is a performance prediction which is a combination of resistance and propulsion testing to get the results of analysis of the speed requirements from the engine to be installed on the ship. Muryadin added, the results of performance prediction will be required by the propeller group to determine the properties and design of the propeller used.

“The accuracy between the test results and during the trial is around 3 percent, the results achieved are in accordance with the standard. As for the numerical the accuracy can be up to 5-10 percent,” said Muryadin.

Head of Dislitbangal, First Admiral Agus Kasminto shared various problems faced in ship design planning. Therefore, BRIN has been appointed as the design planner of the vessels to be made.

“We hope that BRIN Hydrodynamics Technology Research Center can help with the ship design, and then we can schedule a meeting to further discuss the cooperation plan,” said Agus. (aml/ed: sao)