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DNV Statutory Interpretations, June 2011
Page 46 – SOLAS Ch. V: Safety of Navigation
Documentation requirements
SOLAS CH. V: SAFETY OF NAVIGATION
Documents shall be submitted as required by this table:
Documentation requirements
Object Documentation type Additional description For approval (AP) or
For information (FI)
Navigation bridge N010 Bridge design drawing Including navigation equipment
located outside bridge area if
related to primary bridge functions.
AP
N020 Vertical field of vision AP
N030 Horizontal field of vision AP
Navigation lights, day
signals/shapes and sound
signals according to
COLREG
Z030 System arrangement plan Including details of lanterns and
their horizontal- and vertical
locations
Navigational equipment Z090 Equipment list AP
SOLAS V/18 Approval, surveys and performance standards of navigational systems
and equipment and voyage data recorder
Regulation 18.1
For all navigation equipment required by regulation 19, DNV will ask for valid type approval certificate. Long-
Range Identification and Tracking of Ships (LRIT) is exempted from this requirement unless the flag
administration have specified differently.
Regulation 18.2
Performance standards for navigation and communication equipment frequently use the term: “installed on or
after (a specific date is given)”.
The installation date is equivalent to the date the equipment is mounted in its final position.
It is recommended that the installation date for the equipment in this category is documented by an installation
report or a written statement from the responsible installation company or yard.
This is applicable if no other requirements are given by the administration. All other cases regarding the
installation status are to be clarified with the administration.
SOLAS V/19 Carriage requirements for shipborne navigational systems and equipment
Regulation 19.2.1.8
Sound reception system is required installed on all ships with totally enclosed bridges constructed on or after
1 July 2002.
A ships bridge is considered totally enclosed, unless it is provided with open bridge wings.
An open bridge wing, in this context, is an outdoor area adjacent to the enclosed wheelhouse which is:
— easily accessible for the officer of the navigational watch
— designed in such way that lookout (by sight and hearing) can be posted in various weather and sea
conditions
— enabling efficient communication between the lookout and the officer of the navigational watch.
Traditional offshore vessel designs often call for installation of sound reception system.
A catwalk surrounding the bridge, only being accessible from the bridge via doors in the aft of the bridge, is
not consider as open bridge wings in accordance with above interpretation.
Exemption from the requirement of installing sound reception system may only be given on the basis of
acceptance by the Flag Administration.
DET NORSKE VERITAS
AP