I don't know because a lot of MCM appears to be platform agnostic now with the introduction of USV and UUV capabilities. With this there is a way of remotely operating well outside of a minefield so you are not having to design and build a MCM specific hull. It also means that the capability can be moved by air if necessary.Whilst it has been said by the Government that the planned Mine Warfare and Hydrographic ships will be based on the Arafura class ships, I can well imagine they will look significantly different.
Probably something like this:
Naval Group On Track with MCM program - Sets Foot in Belgium - Naval News
The Belgian-Dutch Mine Counter Measure (MCM) program is making significant progress according to Naval Group. After the successful initial trials, the French shipbuilder is quietly progressing towards the industrialization phase. The current ramp-up phase will soon result in the creation of a...www.navalnews.com
I can imagine they will look something like the Naval Group design being built for Belgium and the Netherlands.
The big change will probably be from the funnel back to the stern, a large hangar type structure (mission bay) to house the various USVs and UUVs and a landing pad on top for UAVs.
From what I’ve read, the Naval Group design is just over 80m, 81.4m to be precise, Arafura is approx 80m.
We’ll just have to wait and see, but that’s what I think they may end up looking like.
For instance the RNZN MCM capability is designed to operate out of 2 x 20ft containers and that includes cooking and accommodation facilities for the crew if based ashore. For at sea deployments the accommodation and cooking facilities are not not shipped. The dive team also deploy from helicopters USN MCM style by entering the water from the ramp of a low slow flying helicopter.