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9 Navigation Lights,<br />
Shapes and Sound Signals<br />
9.1 OBJECTIVE<br />
The objective of this Chapter is to provide guidance on the lights, shapes and sound signals required<br />
by MASS.<br />
9.2 S<strong>COP</strong>E<br />
9.2.1 If it can be demonstrated that, for a particular MASS, full compliance with the regulations is impracticable, then<br />
application can be made to the Administration where considered necessary, via the RO, for consideration of<br />
exemptions and equivalent arrangements, taking into account the class and nature of the operation of the MASS<br />
concerned.<br />
9.3 LIGHTS, SIGNALS & SHAPES<br />
9.3.1 A MASS should comply with the requirements of the International Regulations for Preventing Collisions at Sea,<br />
1972, as amended (COLREG). With regard to Part C, a MASS which operates only between sunrise and sunset,<br />
and in favourable weather, is not required to carry navigation lights.<br />
9.3.2 Table 9-1 is a summary table of navigation lights appliances for MASS. This Table is for guidance only and does<br />
not cover all possible operations. Reference should be made to the regulations stated in Paragraph 9.3.1 for all<br />
operations not covered.<br />
Thales USV Apollo with a towed minehunting sonar. © Thales 2019<br />
MASS UK Industry Conduct Principles and Code of Practice Version 7<br />
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