World Sailing Cases that apply to rule 19

  3. While boats are passing a continuing obstruction, if a boat that was clear astern and required to keep clear becomes overlapped between the other boat and the obstruction and, at the moment the overlap begins, there is not room for her to pass between them,
    1. she is not entitled to room under rule 19.2(b), and
    2. while the boats remian overlapped , she shall keep clear and rule 10 and 11 do not apply.