Not quite. A navalised fighter/version usually applies to a fighter capable of operating from a Aircraft Carrier ie the Rafale-M, Sea Gripen, N-LCA, F-18, Sea Typhoon, MiG-29K etc and will in some cases be designed from the ground up as a naval fighter and some will be designed as a shore based fighter later adopted for carrier operations (Sea Typhoon/N-LCA/MIG-29K). Navalsied fighters will have certain inherent differences from their land based counterparts that will usually include arrestor hooks, folding wings, strengthened landing gear etc. Now a maritime strike fighter is usually only a shore based fighter that has been adopted for to fight against maritime targets such as the Jaguar IMs of the Indian Air Force. Now these maritime strike fighters will not feature such inherent design characteristics as naval fighters and won't be able to operate from Aircraft Carriers. They will have the ability to launch anti ship missiles and will likely have certain different modes for their radars. However these days with swing-role fighters the differences between the shore based fighters and dedicated maritime strike fighter variants will be this is less apparent if non-existent ie the Rafale can do it all, the only thing you need to do is place the appropriate set of weaponry on it and relevant data cards.