[Code of Federal Regulations]

[Title 33, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 33CFR117.4]



[Page 543-544]

 

                TITLE 33--NAVIGATION AND NAVIGABLE WATERS

 

         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY

 

PART 117_DRAWBRIDGE OPERATION REGULATIONS--Table of Contents

 

                     Subpart A_General Requirements

 

Sec.  117.4  Definitions.



    Certain terms used in this part are defined in this section.

    Appurtenance. The term ``appurtenance'' means an attachment or 

accessory extending beyond the hull or superstructure that is not an 

integral part of the vessel and is not needed for a vessel's piloting, 

propelling, controlling, or collision avoidance capabilities.

    Lowerable. The term ``lowerable'' means the nonstructural vessel 

appurtenance can be mechanically or manually lowered and raised again. 

The term ``lowerable'' also applies to a nonstructural vessel 

appurtenance which can be modified to make the item flexible, hinged, 

collapsible, or telescopic such that it can be mechanically or manually 

lowered and raised again. Failure to make the modification is considered 

equivalent to refusing to lower a lowerable nonstructural appurtenance 

that is not essential to navigation. Examples of appurtenances which are 

considered to be lowerable include, but are not limited to, fishing 

outriggers, radio antennae, television antennae, false stacks, and masts 

purely for ornamental purposes. Examples of appurtenances which are not 

considered to be lowerable include, but are not limited to, radar 

antennae, flying bridges, sailboat masts, piledriver leads, spud frames 

on hydraulic dredges, drilling derricks' substructures and buildings, 

cranes on drilling or construction vessels, or other items of permanent 

and fixed equipment.

    Nonstructural. The term ``nonstructural'' means that the item is not



[[Page 544]]



rigidly fixed to the vessel and is thus susceptible to relocation or 

alteration.

    Not essential to navigation. The term ``not essential to 

navigation'' means the nonstructural vessel appurtenance does not 

adversely affect the vessel's piloting, propulsion, control, or 

collision avoidance capabilities when in the lowered position.



[CGD 91-059, 59 FR 16563, Apr. 7, 1994]