feeders and branch circuits will be considered.

(c) Location of general alarm bells. (1) General alarm bells shall be so distributed throughout passengers' and crew's quarters in such number and in such a manner as to obtain in each room with the door closed either:

(i) A sound level of not less than 75 decibels; or.

(ii) A sound level of 20 decibels above the ground noise level existing when the vessel is underway in moderate weather, whichever is the higher.

(2) General alarm bells shall be so distributed throughout public spaces, work spaces, and machinery spaces in such number and in such a manner as to warn all occupants in an emergency. [CGFR 58-10, 23 F. R. 4683, June 26, 1958; CGFR 58-31, 23 F. R. 6886, Sept. 6, 1958] Prior Amendments

1956: 21 F. R. 9031, Nov. 21.

§ 113.25-15 Detail requirements.

(d) Electric cable and distribution fittings. (1) All cable installed in conjunction with general alarm systems shall be either leaded and armored, impervious sheathed and armored or mineral insulated metal sheathed.

[Subparagraph (1) amended by CGFR 58-10, 23 F. R. 4684, June 26, 1958]

(5) General alarm system fuse capacities shall be selected to obtain as wide a differential as possible between branch circuit fuses and feeder fuses. The capacity of a feeder fuse shall be approximately 200 percent of the load supplied, and the capacity of a branch circuit fuse shall not exceed 50 percent of the capacity of the feeder fuse. [Subparagraph (5) amended by CGFR 56-39, 21 F. R. 9031, Nov. 21, 1956]

§ 113.25-30 General alarm system for barges of 300 gross tons and over with sleeping accommodations for more than 6 persons. (a) Barges of 300 gross tons and over with sleeping accommodations for more than 6 persons shall be provided with a suitable alarm bell installation. [CGFR 58-10, 23 F. R. 4684, June 26, 1958] SUBPART 113.30-SOUND POWERED TELEPHONE AND VOICE TUBE SYSTEMS

§ 113.30-1 Application. (a) The provisions of this subpart, with the exception of § 113.30-90, shall apply to all self-propelled vessels contracted for on

or after November 19, 1952. Vessels contracted for prior to November 19, 1952, shall meet the requirements of § 113.3090.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958] § 113.30-5 General requirements. (b) Vessels equipped with a gyrocompass system shall be provided with an efficient means of communication between the master gyro-compass and the wheelhouse repeater compass. Whenever the master gyro-compass is located within any compartment adjoining or opening into the wheelhouse, the master gyro-compass shall be considered as being located in the wheelhouse and no communication therewith is required. [Paragraph (b) amended by CGFR 56-39, 21 F. R. 9031, Nov. 21, 1956]

(e)

(1) Vessels equipped with a radio installation shall be provided with an efficient means of communication between the radio room and the wheel house and one other place, if any, from which the vessel may be navigated under normal conditions, as opposed to other such places established solely for emergency functions, or places used solely for docking or maneuvering, or places used occasionally while navigating the vessel in close quarters. As used in this paragraph only a location which includes the necessary apparatus to steer the vessel, give engine orders, and control the whistle will be considered a place from which the vessel may be navigated.

(i) Where the operating position of the emergency radio installation is not located in the compartment normally used for operating the main radio installation, an efficient means of communication shall be provided between the emergency radio room and the wheel house and one other place, if any, from which the vessel may be navigated under normal conditions, as opposed to other such places established solely for emergency functions, or places used solely for docking or maneuvering, or places used occasionally while navigating the vessel in close quarters.

[Subparagraph (1) amended by CGFR 53-59, 18 F. R. 8900, Dec. 31, 1953]

SUBPART 113.35-ENGINE ORDER TELEGRAPH

SYSTEMS

§ 113.35-1 Application. (a) The provisions of this subpart, with the excep

tion of § 113.35-90, shall apply to all selfpropelled vessels contracted for on or after November 19, 1952. Installations contracted for prior to November 19, 1952, shall meet the requirements of § 113.35-90.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958]

§ 113.35-50 Electric engine order telegraph system, operation. (a) Where more than one transmitter, located in the wheelhouse, the wings of the navigating bridge, and/or the top of the wheelhouse, operate a common indicator in the engine room, either the transmitters shall operate in synchronism in accordance with paragraph (b) of this section, or the transmitters shall operate under the control of a transmitter transfer control in accordance with paragraph (c) of this section.

(b) All transmitter handles and pointers and all reply pointers shall operate in synchronism. Where the transmitters are mechanically interlocked to effect synchronous operation, the requirements of § 113.35-30 (a) shall be met.

(c) All transmitters shall operate under the control of a transmitter transfer control so that movement of any one transmitter handle automatically connects that instrument electrically to the engine room indicator and simultaneously disconnects electrically all other transmitters. The reply pointers of all transmitters shall operate in synchronism at all times.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958] SUBPART 113.40-RUDDER ANGLE INDICATOR

SYSTEMS

§ 113.40-1 Application. (a) The provisions of this subpart, with the exception of § 113.40-90 shall apply to all self-propelled vessels contracted for on or after November 19, 1952. Vessels contracted for prior to November 19, 1952, shall meet the requirements of § 113.4090.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958]

§ 113.40-5 General requirements. (a) Vessels of 5,000 gross tons or over, or vessels of any tonnage certificated to carry 250 passengers or more, shall be provided with a system, either electrical or mechanical, for indicating in the wheelhouse the position of the rudder. When non-follow-up steering control is installed at the after steering station, a separate rudder angle indicator system shall be installed for that station. See

Part 57 of Subchapter F (Marine Engineering) of this chapter.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958] § 113.40-10 Detail requirements.

(e) The electric rudder angle indicator system shall comply with the applicable requirements of §§ 113.35-40 and 113.35-45 (a) to (d), inclusive.

[Paragraph (e) amended by CGFR 58-10, 23 F. R. 4684, June 26, 1958]

*

SUBPART 113.50-EMERGENCY LOUDSPEAKER SYSTEMS

§ 113.50-5 General requirements. * (d) The emergency loudspeaker system shall be of a type approved by the Commandant. Systems installed on vessels contracted for on or after November 19, 1958, shall meet the requirements of Subpart 161.004 of Subchapter Q (Specifications) of this chapter.

(Paragraph (d) amended by CGFR 56-39, 21 F. R. 9031, Nov. 21, 1956]

§ 113.50-15 Location of loudspeakers and amplifiers.

(e) Amplifier. (1) The emergency loudspeaker amplifier, if not located in the same enclosure with the control panel, shall be located in the wheelhouse or in a compartment adjoining or opening into the wheelhouse.

TABLE 113.50-15-MINIMUM SOUND LEVEL REQUIRE. MENTS FOR LOUDSPEAKER SYSTEMS [All data given in decibels] !

§ 113.50-25 Type of cable and equipment enclosures. (a) All cable used in connection with the system shall be either leaded and armored, impervious sheathed and armored or mineral insulated metal sheathed.

(b) All junction or connection boxes employed in the distribution system shall be of watertight construction.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958] SUBPART 113.55-NAVIGATION LIGHTS

§ 113.55-15 Installation of navigation lights.

(c) Navigation lights shall be wired by means of a short length of heavy duty portable cable to a watertight receptacle outlet located adjacent thereto. Where the double lens, two-lamp type electric navigation light is installed,

each lamp shall be connected to its branch circuit conductors by means of an individual portable cable and receptacle plug.

[Paragraph (c) amended by CGFR 56–39, 21 F. R. 9031, Nov. 21, 1956]

§ 113.55-25 Navigation light indicator panel. (a) Self-propelled vessels of 1,600 gross tons and over shall be provided with a navigation light indicator panel located in the wheelhouse to control electric side, masthead, range, and stern lights. The panel shall provide visible and audible indications of the failure of any of the above named navigation lights.

[Paragraph (a) amended by CGFR 58–10, 23 F. R. 4684, June 26, 1958]

FIGURE
SEMI-AUTOMATIC NAVIGATION
LINE PANELS FOR PORT AND
STARBOARD SIDE LIGHTS
MASTHEAD, RANGE, AND STERN
LIGHTS

DOUBLE FILAMENT DOUBLE LENS, DOUBLE
LAMP TYPE
LAMP TYPE

113.55-25 (b)

LIGHT PANEL CIRCUITS

LINE PANELS FOR ANCHOR
TOWING, AND NOT-UNDER-COMMAND

SUBPART 113.60-SIGNALING LIGHTS

§ 113.60-5 General requirements. (a) Except as modified by § 33.50-1 of Subchapter D (Tank Vessels) of this chapter, all ocean and coastwise self-propelled vessels of over 150 gross tons shall be equipped with an efficient daylight signaling light of the type covered by this subpart.

[CGFR 56-39, 21 F. R. 9032, Nov. 21, 1956]

§ 113.60-10 Detail requirements.

(g) Fixed or semifixed signaling lights shall be energized from the emergency lighting and power system as required by paragraph (h) § 112.15-5 of this subchapter. Portable signaling units shall be energized from a self-contained storage battery capable of operating the unit 2 hours continuously without recharging. [Paragraph (g) amended by CGFR 56-39, 21 F. R. 9032, Nov. 21, 1956]

SUBPART 113.65-WHISTLE OPERATORS

§ 113.65-5 General requirements. (a) The general requirements for whistles. sirens and fog horns are contained in Part 26 of Subchapter C (Uninspected Vessels), Part 32 of Subchapter D (Tank Vessels), Part 77 of Subchapter H (Passenger Vessels), and Part 96 of Subchapter I (Cargo and Miscellaneous Vessels), of this chapter.

[Paragraph (a) amended by CGFR 56-39, 21 F. R. 9032, Nov. 21, 1956]

SUBPART 113.70-SMOKE DETECTOR SYSTEMS § 113.70-5 General requirements. (a) The smoke detector control unit shall

be of a type approved by the Commandant. Systems installed on vessels contracted for on or after November 19, 1959, shall meet the requirements of Subpart 161.002 of Part 161 of Subchapter Q (Specifications) of this chapter.

(b) All electric cable installed in conjunction with the smoke detector system shall be either leaded and armored, impervious sheathed and armored or mineral insulated metal sheathed.

(c) Cable runs between the smoke detector control unit and the supply switchboard shall be as direct as possible and shall avoid staterooms, lockers, and other enclosed spaces where the cable could be damaged by a localized fire or by other causes.

[CGFR 58-10, 23 F. R. 4684, June 26, 1958] Prior Amendments

1956: 21 F. R. 9032, Nov. 21.

§ 113.70-10 Power supply. (a) On vessels fitted with an automatically started emergency lighting and power system, the smoke detector system shall be supplied by a branch circuit from the emergency switchboard. On vessels fitted with a temporary source of emergency lighting and power, the branch circuit shall be connected to the temporary emergency source of supply.

(b) On vessels not fitted with an automatically started emergency lighting and power system, the smoke detector system shall be supplied from a source as approved by the Commandant.

[CGFR 56-39, 21 F. R. 9032, Nov. 21, 1956]