Section 670-3-IV - SPECIFICATIONS PERTINENT TO THE MAINE STATE AIDS TO NAVIGATION SYSTEMA.SIZE, SHAPE, MATERIAL AND CONSTRUCTION OF AIDS TO NAVIGATION AND WATERWAY MARKERS: the size, shape, material and construction of all markers, both fixed and floating, shall be such as to be observable under normal conditions of visibility at a distance such that the significance of the markers or aids will be recognizable before the observer is in danger.B.NUMBERS, LETTERS OR WORDS ON MARKERS1. Numbers, letters or words on an aid to navigation or regulatory marker shall be placed in a manner to enable them to be clearly visible to an approaching or passing watercraft. They shall be block style, well-proportioned and as large as the available space permits. Numbers and letters on red or green backgrounds shall be white, numbers and letters on white backgrounds shall be black. All markers shall be conspicuously numbered for identification purposes.2. On Lateral (channel) markers, ODD numbers shall be used to identify solid colored green markers; EVEN numbers shall be used to identify solid colored red markers. All numbers shall increase in an upstream direction or toward the head of navigation whenever this is reasonably definable (odd to left or port - even to right or starboard). On waterways where the head of navigation is not reasonably definable, marker numbers shall be assigned at the discretion of the Bureau and/or Permittee.
3. Numbers shall be required on all navigational aids or regulatory markers. For uniformity, this number shall be near the top of floating markers and in the lower right hand part of sign markers. Numbers shall be a minimum of two (2) inches in height.4. A mooring buoy may bear ownership identification provided that the manner and placement of the identification does not detract from the meaning intended to be conveyed by the color code (scheme).C.REGULATORY MARKER SYMBOLS: The symbols (geometric shapes) displayed on a regulatory marker are intended to convey specific meaning to watercraft operators, whether or not they should stay well clear of the marker or may safely approach the marker in order to read any wording on the marker. Wording on regulatory markers shall be black in color. When a regulatory marker consists of a square or a rectangular-shaped sign displayed from a buoy or structure, the sign shall be white with an orange colored border. When a diamond or circular geometric shape is associated with the meaning of the marker, it shall be centered on the signboard.
D.REGULATORY BUOY BANDS: Buoys used to display regulatory markers shall have a clearly visible orange colored band near the TOP and at the BOTTOM of the buoy. The bottom band should be visible above the buoys' waterline. The white portion between the bands will be used to display the appropriate symbol and wording, if any.E.REFLECTORS OR REFLECTIVE MATERIALS: shall be used on all navigational aids and regulatory markers. When used on markers having lateral (channel) significance, GREEN reflectors or retro-reflective materials shall be used on solid colored green markers; RED reflectors or retro-reflective materials shall be used on solid colored red markers; WHITE reflectors or retro-reflective materials shall be used for all other markers, except that orange reflectors or retro-reflective materials may be used on the orange portions of regulatory markers and yellow reflectors or retro-reflective materials may be used on all special purpose markers.F.LIGHTING OF AIDS TO NAVIGATION AND WATERWAY MARKERS: Navigational aids, when lighted, shall conform to the following: lights on solid colored markers shall be regularly flashing, regularly oscillating or equal interval lights. For ordinary purposes the frequency of flashes will not be more than 30 flashes per minute (slow flashing). When it is desired that lights have a distinct cautionary significance, as at sharp turns or sudden constrictions in the channel or to mark artificial or natural obstructions, the frequency of flashes may not be less than 60 flashes per minute (quick flashing). Colors of lights shall be GREEN light on solid colored green markers, a RED light on solid colored red markers and WHITE or AMBER lights for all other markers.
G.SPECIAL LIGHTING REQUIREMENTS: Whenever a structure (anchored or stationary) is erected in a position on or adjacent to the edges of navigable channels or fairways or beyond the "Water Safety Zone" (200 feet from any shore), the Bureau may require lights to mark such structures when, in its judgment, lights are necessary for the safety of the boating public.01- 670 C.M.R. ch. 3, § IV