(a) It is proposed to have one person-hole for the inspection opening. Is one such opening sufficient? [CI 3.20.1, 3.20.4, Ta 3.20.4). It is proposed that the inspection opening be via a short pipe of 457+Y mm outside diameter, where Y is the last digit of the partner whose family name is nearest to the end of the alphabet. Is this a sufficiently large inspection opening size for a vessel of this size? [CI 3.20.4 and