Vigilance Class and the Possibilities: Part 1

By Mikael Perron, 20 July 2024

There were a lot of comments on the post concerning the Vigilance-class design. There were legitimate concerns and questions that remain unanswered. In the next few posts, I will let myself be optimistic and try to see what good that proposal could bring to the RCN.

Let’s first look at the platform. From what I can see, this seems to be a highly modified variant of the Vard 7 072 design.

https://vardmarine.com/gallery/vard-7-072

https://vardmarine.com/wp-content/uploads/2020/05/VARD-7-072-Infographic.pdf

Probably in order to face our specific North Atlantic playground, the bow was modified with an enclosed focsle and a more efficient bulbous bow. Also, to get the necessary room to fit the different sensors/communication equipment, different remote weapon systems and an at-sea replenishment capability, the funnel was removed and the engine exhaust ducts are now situated just above the water line (a feature that can be found on ships like the French Aquitaine FREMM frigate). In order to maximise the aft modular section, the flight deck was moved slightly forward and was reduced in size in order to only operate UAVs. It would be sufficient in size to undertake some medical evacuation or VERTREP operations. Let’s remember that such a ship needs to remain small with a relatively small crew in order to be affordable. We are also talking Kingston replacement and a little gap filling capability to be discussed further on.

In terms of the National Shipbuilding Strategy, I would say that this particular vessel has a design displacement on the edge of the 1000 tonnes limit that separate the small from the large vessels in the NSS. I believe it would displace between 1200-1300 tonnes; so a lot of discussion to be done politically there!

We are now looking at a design that addresses the limitation of the MCDVs. The bad seakeeping qualities of the latter are definitely not a problem with such a design as well as the low maximum speed and limited range. The Vard 7 072 design is said to be able to reach 21 knots and to have an economical cruise speed of 16 knots. Also, if we only consider the Flight I, the weapon fit is improved over the MCDVs and allows for a much better self-defence capability against asymmetric threat. It makes them very appropriate vessels for missions such as Op Caribbe, piracy prevention patrols and any other mission previously done by the MCDVs.

If we take a closer look at Flight I, we should consider that if offers a very large aft modular section that should easily be able to deploy every kit we are now operating on the Kingston-class and everything they are proposing. Among such modular kit, they could deploy one to two RCN’s new multi-role boats (MRB) that are to equip the Halifax-class, Protecteur-class and River-class ships. They also propose some state of the art MCM kit plus ROV and route survey kit. They offer similar capability than the Dutch-Belgian RMCM ships but at a lesser degree. The organic RHIB capability could probably be the same as the Harry DeWolf class. Some are worried that it only had a single organic RHIB capability but the twin engine configuration of the new ones should compensate enough. The uprated weapon fit is most welcome, it would allow for the ship to operate independently in many more scenarios. To use the same decoy system as the Halifax-class is very good. The remote weapon stations on both side are said to be available in 20mm or 0.50 cal version. An alternative could be to use the same NRWS as the Halifax- and Protecteur-class although the extra punch of the 20mm would be welcome against modern threat. In my view, the Bofor 40mm Mk4 gun is a perfect gun for such a ship. It is quite different from the Bofor 40mm gun originally installed on the MCDVs. I definitely wouldn’t worry about too many different ammo types for the RCN. Worse come to worst, I would fit the Leonardo Lionfish 30mm gun to the Vigilance and AOPS but I would rather retro-fit the Lionfish or the Bofor to the AOPS and keep the Bofor for the Vigilance. It is a well-balanced weapon for such a ship. For more on it:

https://www.navylookout.com/in-focus-the-bofors-40mm-mk-4-gun-that-will-equip-the-type-31-frigates

More to come in my next post.

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