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* Visibility is 3nm and more in Ocean Waters * Visibility is 3nm and more in Coastal Waters * Visibility is less than 3nm in Ocean Waters

* Visibility is 3nm and more in Restricted Waters * Visibility is 3nm and more when Entering/Leaving Port * Visibility is less than 3nm in Coastal Waters * Visibility is less than 3nm in Restricted Waters

* Visibility is less than 3nm when entering/Leaving Port

2 dedicated lookout

* In or approaching heavy traffic * In and approaching restricted visibility * Arriving or departing a port, or in restricted waters. * From sunset to sunrise and * At any other time required by OOW or as dedicated by the Master

Visibility Traffic Density State of the weather Arcs of Visibility

Electronic navigation aids including substitutes for maintaining a proper look at. are not ECDIS Radar Arpa AIS

a. When the ship is under pilotage b. Times when the bridge is manned by more than one officer such as when in confined waters or similar when the BNWAS could distract form effective bridge teain management