CONTENTS. 



Page 



Preface by Professor Vilhelm Bjerknes HI 



Introduction V 



Chapter 1. Descriptive. 



A. Collective description 1 



B. Original accounts 9 



Effect of dead-water on steamers and ships in tow (Accounts Nos. 1—4) p. 9. — 

 Effect of dead-water on sailing vessels (Accounts Nos. 5-12) p. 15. - Effects 

 of dead-water and surface-currents combined (Accounts Nos. 13— 15) p. 22. — 

 Collection of various accounts of dead-water in Scandinavia (Nos. 16—32) 

 p. 25. - Collection of accounts of dead-water beyond Scandinavia (Nos. 

 33—42) p. 27. — Accounts from ancient authors (Nos. 43—45) p. 31. 



Chapter II. Preliminaries. 



A. The resistance to vessels under ordinary circumstances 33 



B. Resistance to vessels in shallow water 38 



C. Waves in the boundary between salt and fresh water 41 



D. The effect of a light surface-layer on the resistance of a vessel . . 45 



E. On the application of small scale experiments 49 



Chapter III. Experimental investigation. 



A. Apparatus and methods 54 



B. Qualitative results 60 



The connection between resistance and velocity, p. 60. — The waves generated 

 by the vessel, p. 62. - The oscillations in the velocity of the boat; con- 

 clusions regarding the wave-making resistance, p. 67. 



C. Numerical results '5 



D. Experimental errors and corrections 87 



