Piloting Directions for the Gulf of Finland

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Sivu 6 - ... by means of transit and other instruments, which give the time with great precision. By these means, General Schubert had only occasion to stop at each point the time necessary to compare the chronometers with the astronomical clock there established, of which the rate was very exactly known by prior and subsequent observations, and was not obliged to wait for fine weather at each place.
Sivu 9 - Tower is painted white and has an elevation of about seventy-five feet above the level of the sea, and in clear weather is visible about twelve miles.
Sivu 6 - ... chronometers with the astronomical clock there established, of which the rate was very exactly known by prior and subsequent observations, and was not obliged to wait for fine weather at each place. He was thus enabled, in one summer, to make the circuit three times of all these points.
Sivu 16 - Ort; the distance is about 6 miles. In this track you will have 11, 16, 15, 16, 14, 15, 16, 12, and 14 fathoms water. You will pass about a mile to the westward of a small island, called...
Sivu 9 - Lights, be enabled to run clear between the Revel Stone and Devil's Eye ; which having passed, a SW course will avoid the Wolf Reef, taking care not to bring Kokskar Light to the northward of E. J N., for by so doing they will come too near that reef: keep on this course until you see the northern Catharinendal Light ; this enlightens no more than the angle of the fairway : it will first be seen bearing S.
Sivu 16 - W. from it is another, in 5 fathoms water. After having passed in midchannel, between the first beacon and the small island, steer towards the second beacon, keeping it open on your starboard bow : between the beacons you will have 14, 10...
Sivu 9 - The banh is small, having 2 fathoms over some part of it; but there are two spots or patches upon it generally above water. Between the New and Grass Grounds are 30 to 40 fathoms water; and between the latter and the West Roge, which is about 2 miles to the eastward, are 26 and 27 fathoms. PORT BALTIC. — The East and West Roge are two islands, lying parallel to each other, and encircled by a sandy...

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