Under last year’s version of Rule 20.1, because Lionel and Winnie are not approaching an obstruction, Rule 20 does not apply when Lionel hails, and Winnie is under no obligation to give him room to tack. Under the new Rule 20.1, however, Rule 20 is switched on by a hail for room to tack, even if the hailing boat is not approaching an obstruction. Under the new rule, when Lionel hails, he breaks Rule 20.1(a), but Rule 20.2(b) requires Winnie to respond to his hail even though he has broken Rule 20.1(a). The new Rule 20 provides a safer result. Winnie must give Lionel room to tack (see Rules 20.2[b] and [c]), and the three boats will survive the incident without damage. In the protest room, Ponderosa will be disqualified for breaking Rule 10, and Lionel will be found to have broken Rule 20.1(a), but he will be exonerated under Rule 64.1(a) because he was compelled to break Rule 20.1(a) by Ponderosa’s breach of Rule 10.