Shell have been driving this project and the vessel is very much built to their specification, regardless of any practical common sense.
I dont see 6 ROV’s as a particular requirement for the Ormen Lange workscope. As with previous years of Shell inspection, I doubt all 6 ROV will be in the water working at the same time either. Some will be tooled up with different bits of kit, others standing by in the TMS’s, others changing out. You’ll probably get 4 actually doing anything meaningfull at any one time. I dont think the Kongsberg system will be troubled too much.
The two work class back-to-back through a moonpool sounds a great idea…!!!