A collection of Kelvin's scientific lectures on the science of the seas, particularly on navigation, tides and magnetic forces.

Preface; 32. Navigation; 33. The tides; 34. Terrestrial magnetism and the mariner's compass; 35. On deep-sea sounding by pianoforte wire; 36. On lighthouse characteristics; 37. On the forces concerned in the laying and lifting of deep-sea cables; 38. On ship waves; Index.