POSITION LINES AND CURRENT
By Lieut. Commander H.G. Sparrow, U. S. Navy
About two years ago I read with much interest and profit Lieut. Commander Hepburn's article "Some Suggestions in Practical Navigation" which appeared in the Naval Institute Proceedings. His wide experience in the practice of navigation well qualifies him for the discussion of that subject and his article was very timely.
The bulk of the article, as readers will remember, dealt with the use of single position lines in order to determine the true position of the ship.