Singapore navy launches advanced Sentinel-class offshore patrol vessel

The OPVs measure 94.85m in length, far longer than the MSRVs at 55m. They also have a beam of 15.2m – their width at the widest point – and a displacement of 2,700 tonnes, compared with the MSRV’s 8.6m and 525 tonnes.

The added heft brings greater endurance at sea and more options to implement cutting-edge technologies, “marking a significant leap forward in overall capability”, said Senior Lieutenant-Colonel Jackson Hong, the deputy director at the OPV project office at the RSN’s shipbuilding group.

Despite the vessels’ size, Hong said they are designed specifically for Singapore’s congested and highly active maritime environment, with the high manoeuvrability and operational flexibility required to operate safely and effectively.

In the conceptualisation and construction of the OPV, the Defence Science and Technology Agency, RSN and Fassmer worked together to include in the vessel’s design specific features to fulfil Singapore’s needs.

The OPVs are also equipped with a suite of lethal and less-lethal capabilities to provide calibrated responses against a wide spectrum of maritime threats.

“Learning from conflicts around the world in recent years, we have also designed the ship to be ready for threats posed by drones,” said Hong.

The OPVs are equipped with advanced sensors and layered weapons, including the STRALES guided gun, which can combat unmanned threats in the maritime domain.

Ham Wan Ling, programme director of naval systems at DSTA, who was involved in translating RSN’s operational requirements into technical specifications for the OPV, said the vessel was designed to handle unpredictable threats.

By integrating both lethal and less-lethal capabilities, the vessels offer the versatility and endurance needed to address a broad range of maritime security issues.

“It is about having the right tool for the right situation without needing a different ship for every mission,” she said.

Military Expert 2 Vijayan Manimaran, the weapon control system supervisor (designate) on board the OPV Sentinel, said the new vessel’s improved capabilities allow commanders to calibrate their responses through a combination of conventional weapons, a less-lethal grenade launcher, water and foam cannon, and advanced surveillance systems.

“This allows the ship to respond proportionately to different situations by applying the appropriate level of force while avoiding unnecessary escalation,” he said.

Hong said the ship’s design ensures it can remain relevant in the future, as it has been engineered with extra space for power, cooling and network infrastructure that future capabilities may need, allowing upgrades without major structural redesigns or costly retrofits.

Despite being significantly larger than its predecessor, the OPV operates with a crew of just 40, compared with the MSRV’s crew of 30.

This is made possible by smart automation, said Lieutenant-Colonel Lin Dianxue, the OPV Sentinel’s commanding officer (designate).

For example, the ship’s integrated bridge platform management system allows the crew to monitor and control the various systems remotely, rather than having to walk through the entire vessel.

Automated systems reduce the need for manual checks and upkeep, shortening maintenance time.

“With a fall in population numbers, it is necessary to find ways to more efficiently manage the requirements of the OPV,” said Lin.

ME4 Angela Chan, a coxswain (designate) on the OPV Sentinel, said some of the crew had attended a six-week familiarisation course in Germany, where they were introduced to the various platform systems, deck machinery and firefighting systems.

Looking ahead, she said the crew – many of whom are familiar with the MSRVs – will continue with advanced training and specialised courses to ensure they are ready for operationalisation.

“These programmes are designed to ensure that the crew can confidently manage the OPV’s new capabilities from day one,” she said.