(When a PC12 went down in the Sea of Japan, I am pretty sure everyone on board was very happy to only have had one engine, confident that the ditching to ensue really wasn't that big of a deal. And as they sat there in the life rafts freezing to death waiting for the SAR aircraft arrive, they all felt confident that single engine ops were really a great thing.)
Nonsense! In a Turbo Commander, the same scenario after an engine failure and feathering the prop in the affected engine the twin will KEEP FLYING at 200 KTAS instead of gliding. thus making it to destination or diverting to a safe landing in another airport. Simple as that.
By the way, in that accident SAR they were never dispatched, they were picked up by a cargo ship. And If a Russian SAR helicopter was going to do the rescue would have been a TWIN engined Mi-8.