A few years back I spent a several month long deployment on a USN hospital ship doing what you propose. That is recovering SOLAS lifeboats to ship in seas - not at a dock or harbor. I’ve done it hundreds of times transporting patients, medical staff, media and crew between the ship and shore. (Yes, hundreds of times.) Seas on the beam, boat to windward, boat to leeward, small wind blown swells, deep Pacific swells, confused seas, day time, night time.
I’d like to think that I’m somewhat knowledgeable at this as I was the officer in charge of all boat evolutions. I was present for almost every launch and recovery. I oversaw, participated, recovered and was recovered.
Now most folks here recover SOLAS boats a few times a year at best and almost always in a harbor, tied to a pier when the weather is calm.
Now we practiced for this before deployment. We sometimes did this dozens of times a day for days on end while on deployment. We had the same group of twelve guys doing this for most of the deployment.
So here’s the deal from someone with considerable real world experience doing what almost no one ever does:
For any random bunch of deep-sea mariners it’s a bad idea except in the right conditions or most dire of situations. It shouldn’t be the go-to evolution. Maybe in flat seas it might be ok. Maybe if the SOLAS boat is recovered midship away from the tumblehome. Maybe if the victims are in fridged waters where they have just minutes to live. This would be at the master’s discretion and no one else’s.
And it sure isn’t as easy as you think!