Western Australian Consolidated Regulations

PORTS AND HARBOURS REGULATIONS 1966 - FIRST SCHEDULE

Table 1 — Tidal Signals at Port Hedland

Signals to be displayed from a flagstaff with a yard on the east side of the entrance to the Port — 

Height of tide	Signal
Less than 2.4 metres	No signal.
2.4 metres................	One ball at the eastern yardarm.
2.7 metres................	Two balls disposed horizontally at the eastern yardarm.
3.0 metres................	Three balls disposed horizontally at the eastern yardarm.
3.3 metres................	Four balls disposed horizontally at the eastern yardarm.
3.6 metres................	One ball at each yardarm.
3.9 metres................	One ball at the eastern yardarm and 2 balls disposed vertically at the western yardarm.
4.2 metres................	One ball at the eastern yardarm and 3 balls, one at the side of the other 2 that are disposed vertically, at the western yardarm.
4.6 metres................	One ball at the eastern yardarm and 4 balls disposed in the form of a rectangle at the western yardarm.
4.9 metres................	Two balls disposed horizontally at the eastern yardarm and 2 balls disposed horizontally at the western yardarm.
5.2 metres................	Three balls, one at the side of the other 2 that are disposed vertically, at the eastern yardarm, and 2 balls disposed horizontally at the western yardarm.
5.5 metres................	Four balls disposed in the form of a rectangle at the eastern yardarm and 2 balls disposed horizontally at the western yardarm.

By night, each of the above signals may be displayed by the use of a white light for a ball.

Table 2 — Tidal Signals at Broome and Derby

1.         Signals to be displayed, upon request, at each Port from the jetty at each Port —
        Tide rising — by day, a black triangular shape; by night a green light.
        Tide falling — by day, a black ball; by night a red light.

2.         Signals to be displayed, upon request, at the Port of Broome and the Port of Derby for a flagstaff yard at the jetty at each Port — 

Depth of water	Signal by day	Signal by night
4.2 metres	A black ball over a black triangular shape over another black ball.	A red light over a green light over another red light.
4.6 metres	A black ball over a black triangle shape over a black oblong shape.	A red light over a green light over a white light.
4.9 metres	A black ball over a black triangular shape over another black triangular shape.	A red light over 2 green lights.
5.2 metres	A black ball over a black oblong shape over another black ball.	A red light over a white light over another red light.
5.5 metres	A black ball over a black oblong shape over a black triangular shape.	A red light over a white light over a green light.
5.8 metres	A black ball over 2 black oblong shapes.	A red light over 2 white lights.
6.1 metres	A black triangular shape.	A green light.

Table 3 — Tidal Signals at Point Samson

Signals to be displayed from a post at the jetty at that Port —

        Tide rising — by day, a black triangle; by night, a green light.

        Tide falling — by day, a black ball; by night, a red light.

        Slack water, high or low — by day a black square; by night, a white light.

        [First Schedule amended in Gazette 15 Jun 1973 p. 2235.]