CFR > Title 33 - Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER P—PORTS AND WATERWAYS SAFETY (parts 160 to 169) > PART 164—NAVIGATION SAFETY REGULATIONS > 164.46—Automatic Identification System (AIS).

164.46—Automatic Identification System (AIS).

(a) The following vessels must have a properly installed, operational, type approved AIS as of the date specified:
(1) Self-propelled vessels of 65 feet or more in length, other than passenger and fishing vessels, in commercial service and on an international voyage, not later than December 31, 2004.
(2) Notwithstanding paragraph (a)(1) of this section, the following, self-propelled vessels, that are on an international voyage must also comply with SOLAS, as amended, Chapter V, regulation 19.2.1.6, 19.2.4, and 19.2.3.5 or 19.2.5.1 as appropriate (Incorporated by reference, see § 164.03 ):
(i) Passenger vessels, of 150 gross tonnage or more, not later than July 1, 2003;
(ii) Tankers, regardless of tonnage, not later than the first safety survey for safety equipment on or after July 1, 2003;
(iii) Vessels, other than passenger vessels or tankers, of 50,000 gross tonnage or more, not later than July 1, 2004; and
(iv) Vessels, other than passenger vessels or tankers, of 300 gross tonnage or more but less than 50,000 gross tonnage, not later than the first safety survey for safety equipment on or after July 1, 2004, but no later than December 31, 2004.
(3) Notwithstanding paragraphs (a)(1) and (a)(2) of this section, the following vessels, when navigating an area denoted in table 161.12(c) of § 161.12 of this chapter, not later than December 31, 2004:
(i) Self-propelled vessels of 65 feet or more in length, other than fishing vessels and passenger vessels certificated to carry less than 151 passengers-for-hire, in commercial service;
(ii) Towing vessels of 26 feet or more in length and more than 600 horsepower, in commercial service;
(iii) Passenger vessels certificated to carry more than 150 passengers-for-hire.

Code of Federal Regulations

Note to § 164.46 (a): “Properly installed” refers to an installation using the guidelines set forth in IMO SN/Circ.227 (incorporated by reference, see § 164.03 ). Not all AIS units are able to broadcast position, course, and speed without the input of an external positioning device (e.g. dGPS); the use of other external devices (e.g. transmitting heading device, gyro, rate of turn indicator) is highly recommended, however, not required except as stated in § 164.46(a)(2) . “Type approved” refers to an approval by an IMO recognized Administration as to comply with IMO Resolution MSC.74(69), ITU-R Recommendation M.1371-1, and IEC 61993-2 (Incorporated by reference, see § 164.03 ). “Length” refers to “registered length” as defined in 46 CFR part 69 . “Gross tonnage” refers to tonnage as defined under the International Convention on Tonnage Measurement of Ships, 1969.
Code of Federal Regulations 604
(b) The requirements for Vessel Bridge-to-Bridge radiotelephones in §§ 26.04(a) and (c), 26.05, 26.06 and 26.07 of this chapter also apply to AIS. The term “effective operating condition” used in § 26.06 of this chapter includes accurate input and upkeep of AIS data fields.
(c) The use of a portable AIS is permissible only to the extent that electromagnetic interference does not affect the proper function of existing navigation and communication equipment on board and such that only one AIS unit may be in operation at any one time.
(d) The AIS Pilot Plug, on each vessel over 1,600 gross tons on an international voyage, must be available for pilot use, easily accessible from the primary conning position of the vessel, and near a 120 Volt, AC power, 3-prong receptacle.

Code of Federal Regulations

[USCG-2003-14757, 68 FR 60569, Oct. 22, 2003]