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(4) Five or more short blasts in rapid succession; mean* ing “DANGER"; or “I do not understand your intentions”; or “I do not concur in the maneuver indicated by your signal.”
(b) Whenever a Class I, 2, or 3 motorboat receives one of the above signals from an approaching vessel, and if the operator understands the signal and concurs in the maneuver, he will answer with a similar signal. Whenever the intention of the approaching vessel is unclear, or if the proposed maneuver appears to involve risk of collision or other danger, the motorboat receiving the signal will answer with five or more short blasts in rapid succession, whereupon the operators of both vessels will slow, stop, or change course as necessary to avoid collision.
(c) Motorboats not required to have sound-producing devices on board are not required to give or answer horn or whistle signals, but if they have sound-producing devices on board and elect to give or answer signals, the standard signals prescribed in the foregoing rules shall be used, and none other.
CHAPTER 31. Accident
and Casulaty Reporting
R31-1. The regulations contained in this chapter apply to each vessel in use on waters subject to the jurisdiction of. the State if such vessel is (1) used by its operator for recreational purposes, or (2) is required to be numbered under the Federal Boat Safety Act if 1971 (85 Stat. 213; 46 U.S.C. 1451, et seg.); and to each vessel in use on the margi- • nal sea adjacent to this State and on the high seas (1) when such vessel is required to be numbered under (he Federal Boat Safely Act of 1971 and is en route to or from this State; or (2) when such vessel is owned or principally berthed in this State and is used by its operator for recreational purposes.
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