Whenever a pilot is aboard any vessel in a piloting capacity, the pilot shall assure that the International code flag "Hotel" is displayed from the vessel by day. The master of the vessel and the pilot shall exchange information in a timely fashion regarding navigation procedures, local conditions and the ship's characteristics. The master and/or the officer-in-charge of the navigational watch shall co-operate closely with the pilot and maintain an accurate check on the ship's position and movement while operating in bodies of water under the jurisdiction of the Commission.
17- 387 C.M.R. ch. 1, § B-4