Shortly: Normally it will be type approval to consider, as testing will involve sideways stroke test, and drop test, fully loaded.... flooding, capsizing, consumption, speed, etc..
Spain is a member of EU, thus accepting the "wheel marking" (Equivalent to CE marking, but other requirements) for equipment manufactured/ produced under LSA/ SOLAS. Spanish authorities may (probably) add some extra requirements.
Life raft will not be needed, as a lifeboat and liferaft both are life saving appliances.
For a "one off" design, I think it will be (way) too expensive....
btw; used to work here; www.norsafe.no
with design, certification, and testing... Still miss part of the crashing, capsizing, handling bit, some of the chaps working there can really handle a (fast rescue) boat.