the river. The narrow channel admittedly ends in fact at the flashing buoy at Williamstown. They are open waters south of that point, and it is said that, even if it be true that nearing the mouth of the river vessels commonly keep or are expected to keep to their respec- tive starboard sides, yet this cannot extend south of the Gellibrand light, which is about 5,575 feet from the Williamstown flashing buoy. "CARADALE." To account for the Kakariki being in the neighbourhood of the
point where the collision actually took place, it is enough for her master to point to the course which, he claims, he was making. Her course of N. 22° E. true, if set from two cables off, that is, east of, the West Channel pile light and maintained, should, it is said, have brought her out two cables off Gellibrand. If the customary rule which is set up on behalf of the Caradale prevailed and applied
SO far south, it may be that the Kakariki would be expected to go further to the east, but, unless she did so, her course would be expected to bring her within a cable and a half of the point of collision. It is true that, according to a calculation made or caused to be made by the plaintiff's counsel, the exact bearing of the Gellibrand light from the West Channel pile light is N. 21° 11' E., and, according to another stated by the defendant's counsel, a variation of a degree in a course of twenty miles exactly maintained means a difference of four cables or 2,400 feet in the ship's position after accomplishing that distance. Neither of these calculations was proved in evidence, although no doubt the second is the result somewhat overstated of an ordinary trigonometrical ratio. It would mean that, if the Kakariki accurately laid and kept a course of N. 22° E. true, she would have passed some cables further east of the point of collision. Her master says that, seeing the outgoing Caradale and in view of her movements. he gave a helm order to port at a point which on his estimate would be about nine cables to a mile from the Gellibrand light. This order and, perhaps, a subsequent order, hard-a-port, given at a late stage, brought his vessel to the point where it was struck.
A very general view of the nature of the case suggests that the collision was brought about by an attempt on the part of one vessel, the Caradale, to pass red to red combined with an intention, if not an attempt, on the part of the other, the Kakariki, to pass green to green. But this gives no more than a reason why the casualty