Yeah, that's about the way I figure. In this day and age, telephones can always be forwarded. Answering machines (even at the telco exchange) can always give a message. Someone can always pick up a phone and say "I'm flying to Ganjou for a funeral, we've closing the shop for ten days."
Or, I'd be equally content to hear someone say "Yeah, we were at sea, went racing and had some gear failures, couldn't get back to you till we made land."
Of course, considering what it costs to ship a rudder, and what it costs to keep a boat on the hard because you can't sail WITHOUT THE RUDDER...I'd expect more than flowers in the morning after I'd been sent a wrong rudder.
But that's just me, I'm a hard customer.