183.538 Metallic fuel line materials. 183.540 Hoses: Standards and markings. 183.542 Fuel systems.

MANUFACTURER REQUIREMENTS

183.550 Fuel tanks: Installation.

183.552 Plastic encased fuel tanks: Installation.

183.554 Fittings, joints, and connections. 183.556 Plug and fittings.

183.558 Hoses and connections.

183.560 Hose clamps: Installation.

183.562

Metallic fuel lines.

183.564 Fuel tank fill system.

183.566 Fuel pumps: Placement.

183.568 Anti-siphon protection.

183.570 Fuel filters and strainers: Installation.

183.572 Grounding.

33 CFR Ch. 1 (7-1-90 Edition)

183.705 Definitions.

183.710 Start-in-gear protection required.

183.715 Exception.

Subpart M-[Reserved]

Subpart N Special Provisions

183.901 Applicability to "OMC Sea Drive"

installations.

AUTHORITY: 46 U.S.C. 4302; 49 CFR 1.46. SOURCE: CGD 72-61R, 37 FR 15782, Aug. 4, 1972, unless otherwise noted.

Subpart A-General

§ 183.1 Purpose and applicability.

This part prescribes standards and regulations for boats and associated equipment to which 46 U.S.C. Chapter 43 applies and to which certification requirements in Part 181 of this subchapter apply.

[CGD 85-098, 52 FR 19728, May 27, 1987] § 183.3

Definitions.

(a) "Beam" means the transverse distance between the outer sides of the boat excluding handles, and other similar fittings, attachments, and extensions.

(b) "Boat" means any vessel manu. factured or used primarily for noncommercial use; leased, rented, or chartered to another for the latter's noncommercial use; or engaged in the carrying of six or fewer passengers.

(c) "Full transom" means a transom with a maximum width which exceeds one-half the maximum beam of the boat.

(d) "Length" means the straight line horizontal measurement of the overall length from the foremost part of the boat to the aftermost part of the boat, measured from end to end over the deck excluding sheer, and measured parallel to the centerline. Bow sprits, bumpkins, rudders, outboard motor brackets, handles, and other similar fittings, attachments, and extensions are not included in the measurement.

(e) "Monohull boat" means a boat on which the line of intersection of the water surface and the boat at any operating draft forms a single closed curve. For example, a catamaran, tri

maran, or a pontoon boat is not a monohull boat.

(f) "Remote steering" means any mechanical assist device which is rigidly attached to the boat and used in steering the vessel, including but not limited to mechanical, hydraulic, or electrical control systems.

(g) "Sailboat" means a boat designed or intended to use sails as the primary means of propulsion.

(h) "Sheer' means the topmost line in a boat's side. The sheer intersects the vertical centerline plane of the boat at the forward end and intersects the transom (stern) at the aft end. For the purposes of this definition, the topmost line in a boat's side is the line defined by a series of points of contact with the boat structure, by straight lines at 45 degree angles to the horizontal and contained in a vertical plane normal to the outside edge of the boat as seen from above and which are brought into contact with the outside of the horizontal boat. A boat is horizontal when it is transversely level and when the lowest points at 40 percent and 75 percent of the boat's length behind the most forward point of the boat are level.

(i) "Transom" means the surface at the stern of a boat projecting or facing aft. The upper boundary of the transom is the line defined by a series of E points of contact, with the boat structture, by straight lines at 45 degree angles to the horizontal and contained A in a vertical longitudinal plane and which are brought into contact with the stern of the horizontal boat. A boat is horizontal when it is transversely level and when the lowest

points at 40 percent and 75 percent of the boat's length behind the most forward point of the boat are level.

(j) "Vessel" includes every description of watercraft, other than a seaplane on the water, used or capable of being used as a means of transportation on the water.

(k) "Permanent appurtenances" means equimpent that is mounted or fastened, so that it is not removable without the use of tools. Seats, inboard engines, windshields, helm stations, or hardtops are permanent appurtenances. Outboard motors, controls, batteries, and portable fuel tanks are not permanent appurte

nances.

(1) "Transom height" means the vertical distance from the lowest point of water ingress along the top of the transom to a line representing a longitudinal extension of the centerline of the boat's bottom surface, excluding keels. This distance is measured as a projection on the centerline plane of the boat. See Figure 183.3.

(m) "Motorwell" means any arrangement of bulkheads or structures that prevents water from entering the passenger carrying area of the boat through any cutout area in the transom for mounting an outboard motor.

(n) "Motorwell height" means the vertical distance from the lowest point of water ingress along the top of the motorwell to a line representing a longitudinal extension of the centerline of the boat's bottom surface, excluding keels. This distance is measured as a projection on the centerline plane of the boat. See Figure 183.3.