AND OTHER WATER WAVES 61 



ship, which dips her bows into the rising billow 

 in a head sea. The recorded heights also tend 

 to increase as the ships are built of larger dimen- 

 sions, on account of the fact that the greater height 

 of the navigation bridge and wheel-house allows 

 the attainment of a greater altitude to be recorded 

 with certainty. The wheel-house of the Lusitania, 

 e.g., is 80 feet, or rather more, above the flotation 

 line. 



Waves on the North Pacific Ocean 

 The North Pacific Ocean has a breadth of open 

 and deep sea about twice as great as that of the 

 North Atlantic. The passage from Victoria, B.C., 

 to Yokohama is about 4,000 geographical miles, 

 as compared with the 3,000 from Liverpool to New 

 York. This route is traversed by a number of liners 

 similar to the medium -sized Atlantic liners. I made 

 this passage once, east-bound from Yokohama to 

 Seattle, in fair weather, when we only encountered 

 a moderate swell similar to that met with in similar 

 weather in the same latitudes on the Atlantic. The 

 great circle course which is followed took us as 

 far north as Lat. 49 40'. I had opportunities 

 during this long voyage of collecting opinions upon 

 the size of the waves on this route as compared with 

 those of the North Atlantic and of the Southern 

 Ocean from seamen who knew all three. The late 



