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"July, 1920 nometer time is a. m., it means that it is that many hours past the second half of the previous date. If the chronometer time is p. ™., the chronometer time will be an accurate record of the number of pours in the new day. Had this sight recorded in the example worked out, been taken when the chronometer gave an 4, m. reading of 6 hours, 38 minutes and 4] seconds, it would have been that many hours of the previous date, June 3 instead of June 4, and the chrono- meter time would have read: 3d. 6h. 38m. Als, Since it was a p. m. sight, the date stood. Further along in the example, the correction in observed altitude for the height of the eye was made with the use of Bowditch Table 46, which gives the correction to be applied to the ob- served altitude of the sun's lower limb. When this table is used it is not neces- sary to take into consideration the semi- diameter of the sun, the refraction or the parallax as all three are taken into account in the table in calculating the height of eye correction. Be sure not to overlook the additional correction for sun's altitude noted in the smaller table at the foot of Table 46. Care should also be exercised in using Bowditch Table 45. This table gives one hour reading at the top of the table of logarithmic haversines and another at the bottom of the table. The hour read- ing, or hour angle, at the top of the table is used when the observation was taken when it was p. m. at the ship. The hour angle is taken from the bot- tom of the table when the observation: was taken when it was a. m. at the ship. When the hour angle is taken from the bottom of the table for the a. m. observa- tion, it is necessary to drop a day from the date. This is done for the same reason that a day was dropped when the chronometer time was a. m. »A final rule, as so often expressed by navigators, is: Greenwich time best, longitude west; Greenwich time least, longitude east. This means that when the local appar- 'nt time (L.A.T.) is greater than the Greenwich apparent time (G.A.T.), the ship's position is, very naturally, east of the prime meridian of Greenwich. When LAT. is less than G.A.T., the ship's Position is west, (To be continued) The Pacific Steamship Co., Portland, "8, will be local agent for the New thee Maritime Corp. operating a line oe between Boston and Pacific ,. Ports, it is announced by Frank J. Thommen agent of the Admiral line. € steamer Articas, launched at the Fog Island yard, March 25, was the first 'sel in the new service, THE MARINE REVIEW 'of eastern yards have shut down com- 391 recently. She cleared almost immediately with a full cargo of oak staves for Portuguese ports. Two other schooners of similar size, taken from the Mediter- Sells Wooden Hulls Two unfinished wooden hulls at the plant of the Anacortes Shipbuilding Co., Port Townsend, Wash., were recently : sold for $250 each. hey, were: Soneht ranean service, are. to be put into the by R. B. Lomman, a cannery operator New Orleans trade at once. who will break them up and salvage the o lumber. The hulls are the last of an en Association Meets order for six from the United States The Gas Products'? association. will shipping board. Four of the vessels hold its summer convention at Mackinac be One oe island, June 21-22. The members will Various shipbuilding yards in Maine leave Chicago by steamer, eruising enjoy an excellent business outlook for northward through Lake Michigan, and Table V Method of Determining Lodowade 4d. Gh. 38m. 41s. 6m. 21s. Chronometer Time Equation of time by Nauties] Almanac fo June 4, 1919, Chronometer Correction was 2 min. 03 sec., with an hourly variation of 0.412 sec. minus. For 6.7 hours this gives a minus cor- rection of 2.7 sec. Wherefore the correct equation of ° time is 2 min, 00 sec. plus. 4d. 6h. 45m. 02s. Equation 2m. 00s. of time 4d. 6h. 47m. 02s., which is the G. A. T. The declination of the sun on June 4 was 22 deg. 20 min. 33.7 sec. N. But there was an hourly variation Correction 2 min, 02 sec. of 18.26. sec. for 6.7 hours, which gives a correction to be made of 2 min. 02 sec. plus. 22 deg. 22 min. 36 sec. N. (Note:--The latitude and declination are both 90 deg. 00 min. 00 sec. north, therefore, the declination is sub- 22 deg. 22 min. 36 sec. tracted from 90 degrees.) ee 67 deg. 37 min. 24 sec. which is the polar distance. Observed altitude 33 deg. 51 min. 10 sec. Indicated error 1 min. 20 sec. + 83 deg. 52 min. 30 sec. Height of eye 10 min. 06 sec. + (Bowditch, Table 46) True altitude 84 deg. 02 min. 36 sec. Latitude 40 deg. 20 min. 00 sec. orc SeCANL as once. Oa) Polar distance 67 deg. 37 min. 24 sec. ----Cosecant ....0.03402 y 142 deg. 00 min. 00 see = | 3 } : Bowditch, Table 44 pa 71 deg. 00 min. 00 sec. oo sCOsine. eu eG) 34 deg. 02 min. 36 sec. : 2 Hemainder 36 deg. 57 min. 24 sec. bee SINE: 6 ie 19. ego.) 9.44350, which equals (Bowditch, Table 45)--4d. 4h. 14m. 238s. Local apparent time. 4d. 6h. 47m. 02s. So Greenwich Apparent Time reenwi pp. 4d. 4h. 14m. 23s. Local Apparent Time (Bowditch, Table 7)--38 deg. 09 min, 45 sec, W, 2h. 32m. 39s, W ( : Longitude in. spending two days at Mackinac. The the coming season but in some other eastern. states a general falling off of association is composed of manufac- business is reported, when compared turers of electrolytic oxygen and A number hydrogen. with the past two years. Canadian government merchant ves- sels, according to a recent government report, range in tonnage from 3750 to 10,500 tons and are being completely built, outfitted and manned in Canada. The cost of construction ranges from $180 to $215 per deadweight ton. Only freight carriers have been constructed so far but passenger ships up to 15,000 tons are being considered. pletely among them being that of Pendleton & Co. Mystic, Conn. The yard closed late in February for an in- definite period. Portuguese ports were connected with New Orleans by sailing ship service when the big 4-mast schooner VEN- tuRoso, owned by Esteve Bros., with general cargo entered the Louisiana port =