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15 fathoms 34 mile Afognak Akun Island Akutan anchor anchorage beach Bering Sea bight bluff bottom bowlders cannery Cape channel chart cliffs coast Cook Inlet course cove dangers distance east side easterly eastern shore eastern side eastward Egg Island fathoms feet high flat foul ground Harbor head high water Inlet Island islet Kayak Island kelp knots land lies low water mid-channel middle mile from shore mile wide miles long miles northward miles southeastward miles westward mountains narrow navigation north end north shore north side northeast northeastward northerly northern end northwest end northwest side pass passage peak Port ridge River rocky Shelikof Strait small craft small vessels south point south side southeast southern southward southwest southwestward steer Strait tidal currents Tigalda Island true SW Unalaska Island Unga Island Unimak Unimak Island velocity weather west side westerly winds western end Whale Island wharf williwaws wooded yards Yi mile
Page 12 - The glare of a powerful light is often seen far beyond the limit of visibility of the actual rays of the light, but this must not be confounded with the true range.
Page 19 - ... 11. For a boat riding in bad weather from a sea anchor it is recommended to fasten the bag to an endless line rove through a block on the sea anchor, by which means the oil can be diffused well ahead of the boat and the bag readily hauled on board for refilling, if necessary.
Page 18 - On free waves, ie, waves in deep water, the effect is greatest. 2. In a surf, or waves breaking on a bar, where a mass of liquid is in actual motion in shallow water, the effect of the oil is uncertain, as nothing can prevent the larger waves from breaking under such circumstances, but even here it is of some service.
Page 15 - The xylonite protractor also permits the laying down for simultaneous trial of a number of angles in cases of fixing important positions. Plain tracing paper may also be used if there are any suitable means of laying off the angles. The value of a determination depends greatly on the relative positions of the objects observed. If the position sought lies on the circle passing through...
Page 12 - ... be had to the scale of the chart used. A small error in laying down a position means only yards on a large-scale chart, whereas on a small scale the same amount 01 displacement means large fractions of a mile.
Page 17 - ... between them; or by drawing to the position obtained with one latitude a line at right angles to the bearing of the body as taken from the azimuth tables.
Page 18 - In cold water, the oil, being thickened by the lower temperature, and not being able to spread freely, will have its effect much reduced. This will vary with the description of oil used.
Page 16 - of position is desired, angles should invariably be used, such as the fixing of a rock or shoal, or of additions to a chart, as fresh soundings or new buildings. In...
Page 17 - ... of magnetic force of an amount absolutely unknown to affect a compass half a mile distant. Such deflections of the compass are due to magnetic minerals in the bed of the sea under the ship, and when the water is shallow, and the force strong, the compass may be...