[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of Octobery 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR15.520]

[Page 248-249]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 15_MANNING REQUIREMENTS--Table of Contents
 
            Subpart D_Manning Requirements; Inspected Vessels
 
Sec. 15.520  Mobile offshore drilling units.

    (a) The requirements in this section for mobile offshore drilling 
units (MODUs) supplement other requirements in this part.

[[Page 249]]

    (b) The OCMI determines the minimum number of licensed individuals 
and crew (including lifeboatmen) required for the safe operation of 
inspected MODUs. In addition to other factors listed in this part, the 
specialized nature of the MODU is considered in determining the specific 
manning levels.
    (c) A license as offshore installation manager (OIM), barge 
supervisor (BS), or ballast control operator (BCO) authorizes service 
only on MODUs. A license or endorsement as OIM is restricted to the MODU 
type and mode of operation specified on the license.
    (d) A self-propelled MODU other than a drillship must be under the 
command of an individual who holds a license as master endorsed as OIM.
    (e) A drillship must be under the command of an individual who holds 
a license as master. When a drillship is on location, the individual in 
command must hold a license as master endorsed as OIM.
    (f) A non-self-propelled MODU must be under the command of an 
individual who holds a license or endorsement as OIM.
    (g) An individual serving as mate on a self-propelled surface unit 
other than a drillship must hold an appropriate license as mate and an 
endorsement as BS or BCO. An individual holding a license or endorsement 
as barge supervisor or ballast control operator may be substituted for a 
required mate when a self-propelled surface unit other than a drillship 
is on location or under tow, under certain circumstances as determined 
by the cognizant OCMI.
    (h) An individual holding a license or endorsement as barge 
supervisor is required on a non-self-propelled surface unit other than a 
drillship.
    (i) An individual holding a license or endorsement as barge 
supervisor may serve as ballast control operator.
    (j) The OCMI issuing the MODU's certificate of inspection may 
authorize the substitution of chief or assistant engineer (MODU) for 
chief or assistant engineer, respectively, on self-propelled or 
propulsion assisted surface units, except drillships. The OCMI may also 
authorize the substitution of assistant engineer (MODU) for assistant 
engineer on drillships.
    (k) Requirements in this part concerning radar observers do not 
apply to non-self-propelled MODUs.
    (l) A surface mobile offshore drilling unit underway or on location, 
when afloat and equipped with a ballast control room, must have that 
ballast control room manned by an individual holding a license or 
endorsement authorizing service as ballast control operator.

[CGD 81-059a, 55 FR 14805, Apr. 18, 1990]