River is 13.6m wide and 90m long, so it can go anywhere. Israeli SeaGull USV is good that they worked in sea state 5-6, but it is not clear if it is also true for ASW (I understand it was on MCM). This two things are both promising = good things.
But, I agree USV option will be "more advanced". Actually, ATLAS ARCIMS UAV has 2-sets of ASW version ordered from "somewhere". I understand it carries ATLAS ACTAS sonar.https://www.naval-technology.com/contra ... -contract/
- The ACRIMS system is 11.2 m long, 3.4 m wide and 10-12 t including the mission systems. Therefore, River B2 can carry two of them, in both sides of the 15t crane (a slight re-arrangement in deck-plan might be needed). A 50-man capable "additional accommodation space" will easily accept the operators' team, and River B2s main accommodation area around the bridge itself has some redundant space. Clearly, this is one option.
# The same applies for Israeli Sea Gull USVs. Two can be carried on River B2, if needed.
- On the other hand, as shown by Thales' movie, River B2 with CAPTAS-1 (and Blue Watcher) is also a good example.
Apparently, the two options are both "doable", and "at what theater" and "against what threat" will define which options are better. As both systems has VDS, it can cover complex sea water conditions (e.g. river water floating above the salt water), which is a clear merit against any hull sonar.
By the way, to relieve the escorts' tasks, I think River B2 can be the primary option for shadowing Russian warships around UK water. It is so-so fast, so-so sea worthy, and very cheap to operate. Using escorts for such tasks is not efficient, I think.
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