Section 13A. Every scuba diver or group of scuba divers while swimming on or under the surface of the waters of the commonwealth shall display for each diver or group of divers as a warning device to boat operators, a diver's flag, so called, constructed of rigidly supported material at least twelve inches by fifteen inches in area of red background with a white diagonal stripe. Such diver's flag shall be displayed on a boat or surface float and shall extend a minimum distance of three feet from the surface of the water. Divers shall remain in an area within one hundred feet of such displayed diver's flag while at or near the surface of the water. A boat operator within sight of a diver's flag shall proceed with caution and within a radius of one hundred feet of such flag shall proceed at a speed not to exceed three miles per hour.
Structure Massachusetts General Laws
Part I - Administration of the Government
Title XIV - Public Ways and Works
Chapter 90b - Motorboats, Other Vessels and Recreational Vehicles
Section 2 - Numbering; Exceptions
Section 3 - Application for Certificate of Number; Display
Section 4 - Lost, Destroyed or Mutilated Certificates of Number; Replacement
Section 4a - Altering, Forging or Counterfeiting Certificates of Number of Motorboat; Penalty
Section 5a - Personal Floatation Devices
Section 5b - Automatic Shut–off Nozzle for Motorboat Fuel Dispensing Devices; Fine
Section 5c - Discharge of Sewage Into Waters Designated as a No Discharge Area; Fine
Section 5d - Violations of Sec. 37b of Chapter 21; Penalties
Section 6 - Exhaust; Use of Cutouts
Section 7 - Compliance With Sec. 5; Pre-Requisite to Departure From Boat Livery
Section 9 - Accidents; Duty of Operator; Reports
Section 9a - Jet Ski, Surf Jet or Wetbike Operation
Section 9b - Educational Safety Program; Jet Skis, Surf Jets and Wetbikes
Section 10 - Requests for Information or Records From Federal Agencies
Section 11 - Powers and Duties of Director
Section 12 - Enforcement of Chapter
Section 12a - Operation Without Personal Flotation Devices or in Overloaded or Unsafe Condition
Section 13 - Arrest Without Warrant; Entry Upon Private Lands
Section 13a - Scuba Divers; Display of Diver's Flag Required
Section 14 - Penalties; Proceedings
Section 15 - Scope of Chapter; Local Regulations; Approval of Ordinances and By-Laws
Section 17 - Enforcing Officers; Reports to Director
Section 20 - Definitions Applicable to Secs. 21 to 35
Section 21 - Recreation Vehicle Safety and Responsibility Course
Section 22 - Registration; Application; Period; Certificate; Name and Address; Transferability; Fees
Section 22a - Vintage Snow Vehicle; Registration; Operation Restrictions
Section 23 - Transfer of Ownership
Section 24 - Lights; Reflectors; Excessive Noise; Noxious Fumes
Section 25 - Operation on Public Ways; Emergencies; Regulations
Section 26 - Prohibited or Limited Operation by Underage Persons; Restrictions
Section 26d - Summons for Violation of Secs. 26a or 26b
Section 28 - Suspension or Revocation of Registration; Hearing
Section 29 - Rules and Regulations
Section 30 - Nonresident Recreational Vehicles
Section 31 - Municipal Assessments
Section 32 - Regulations; Enforcement; Reports of Violations
Section 33 - Local or Departmental Regulation; Trespassing
Section 34 - Violations; Punishment
Section 35 - Disposition of Fines
Section 36 - Titled Motorboats; Certificates of Title