[Title 46 CFR B]
[Code of Federal Regulations (annual edition) - October 1, 1996 Edition]
[Title 46 - SHIPPING]
[Chapter I - COAST GUARD, DEPARTMENT OF]
[Subchapter L - OFFSHORE SUPPLY VESSELS]
[Part 131 - OPERATIONS]
[Subpart B - Markings on Vessels]
[From the U.S. Government Publishing Office]




  46
  SHIPPING
  4
  1996-10-01
  1996-10-01
  false
  
  B
  Subpart B
  
    SHIPPING
    COAST GUARD, DEPARTMENT OF
    OFFSHORE SUPPLY VESSELS
    OPERATIONS
  


                     Subpart B--Markings on Vessels



Sec. 131.210  Hulls.

    Each OSV must be marked as required by parts 67 and 69 of this 
chapter.



Sec. 131.220  Drafts.

    (a) Each OSV must have the drafts of the vessel plainly and legibly 
marked upon the stem and upon the sternpost or rudderpost, or at any 
place at the stern of the vessel that may be necessary for easy 
observance. The bottom of each mark must indicate the draft.
    (b) Each draft must be taken from the bottom of the keel to the 
surface of the water at the location of the marks.
    (c) When, because of raked stem or cutaway skeg, the keel does not 
extend forward or aft to the draft markings, the datum line from which 
the draft is taken must be the line of the bottom of the keel projected 
forward or aft, as the case may be, to where the line meets that of the 
draft markings projected downward.
    (d) When a skeg or other appendage extends below the line of the 
keel, the draft at the end of the OSV adjacent to that appendage must be 
measured to a line tangent to the lowest part of the appendage and 
parallel to the line of the bottom of the keel.
    (e) Drafts must be separated so that the projections of the marks 
onto a vertical plane are of uniform height, equal to the vertical 
spacing between consecutive marks.
    (f) Marks must be painted in a color contrasting with that of the 
hull.
    (g) Where marks are obscured because of operational constraints or 
by protrusions, the OSV must be fitted with a reliable draft-indicating 
system from which the drafts at bow and stern can be determined.



Sec. 131.230  Loadlines and decklines.

    Each OSV assigned a loadline must have loadline markings and deck-
line markings permanently scribed or embossed as required by subchapter 
E of this chapter.