SHIPPING.

Patea Mail, Volume VIII, Issue 1026, 25 April 1883, Page 2

SHIPPING.

PORT OF PATEA. HIGH WATER. Morn Even Wednesday ... 11-25 ... 11-40 Thursday ... ... 11-40 ... 0-0 Friday ... ... 0-15 ... 0-33 Saturday ..; ... 12-50 ... 1-10 Sunday 1-30 ... 1-50 Monday ... ... 2-20 ... 2-55 Tuesday ... ... 3-31 ... 4-18 TIDE AND PILOT SIGNALS. Ebb tide—One ball at mast head Flood tide—Two balls do. Three quarter flood—Three balls do. Stand on and take the bar —Four balls horizontal Wait for tide—One ball at each yard arm and one, half the length of the yard below the yard Bar dangerous —Two balls at one ard arm and on* at the other Bar safe-for steamers outwards—One pennant Bar safe for sailing vessels outwards —Red f\p.g, half mast Bar dangerous for steamers outwards—Two pennants ARRIVED. April 23.—Wild Wave, schooner, SAILED. April 24. —Napier, s.s., 50 tons, Fisk, for 'Wellington. Passengers ; Miss Stevens, Dr Keating, and Mr Blood. W Cowern, ag.mt. EXPORTS. Per Napier—l3B sacks wheat, Brightwell ; 7 pigs, R Slattery,,96 sacks clmfiv 1 jiv-flrtyahtK pi crank, Benzie, Bulmer, and , Co ; 2 bales wool, 44 do, Bank Australasia ; 12 casks tallow, N.Z. Loan Co.; 2 cases, Scott ; 1 barrel tallow, D Spence. The Austral has now nothing in her except a quantity of pig-iron, as stiffening, and her. water-ballast tanks, which arc full, draws 2oft Sin. It is anticipated that she will be ready to leave for England at about the end of May. No passengers will be taken by her to London, A statement having been made that the Austral could not be docked at Williamston the Victorian authorities gave a denial to it. ■ -The Messageries. Maritime Company have just completed another new steamer intended for the Australian trade. She is named , Sydney, and her gross tonnage is 4,008 tons, and lief, nominal horse-power 600. On her trial trip frotri Marseilles to.Spezzia, she attained a speed : of 15-2o knots. She was built in the Company’s dockyard, and she will- leave that port for Australia via Mauritius on the 15th inst. * In shipping circles at Home much gratification was expressed at the floating of the Austral. It is stated that the general scheme for raising her was settled in -London by the managers of the Orient Company, who were guided by the advice of Mr John Stansfield, MiI.C.E. The Austral is insured in London, Liverpool, Glasgow, and, Paris;, for upwards of £.200,000. \ , ACCIDENT TO THE CHARLES EDWARD. , . . 'Whilst the steamer Charles Edward was lying at the wharf at Westport, a charge of . dynamite was filed in the river close to the vessels for the purpose, of blowing up a snag, arid the steamer was much shaken by. the force of the explosion, but it was not thought that any damage . was sustained. On her passage to Nelson she made 2ft of water in the main hold, and.it is believed,some of the rivets must have started. She' will, have to go oil the slip ’ before , proceeding to' sea again; • ''' ' '' THE FASTEST SHIP AFLOAT. , A-.home paper say s, the Oregon, a new steamer for the Guion line, is intended to .exccTin-speed the fastest ship now afloat. She will riot be much larger than the Alaska, but her engines are to indicate no less than T 3, 000 horse-power. She will have but one screw, about 24ft in diameter, with a, pitch of nearly, 10. Steam will be supplied by twelve boiler?, each with six furnaces 3ft 6in in'diaxrieter; the grates being a little over 6ft long. The aggregrate grate surface in the Oregon will be 15i2ft, divided- among 72 furnaces, while that of the Alaska is .1134, divided among 54 furnaces. As the Oregon with burn about 201b of coal per square foot of grate per hour, her consumption in 24 hours will not b6 much under .300 tons ; and, allowing that each ton of coal evaporates nine tons of water, we find that* rio less than 2700 tons of steamwill pass through her engines . -cv Cry 24 hours.- A tank lOoft square, to bold 2700 tons of water, must he nearly 10ft deep to prevent the water from running over the 'edge. ' If the tank were 50ft square, the water would stand 38ft i lOiri deep in it. If the water were supplied, to a town, allowing four cubic feet Or 25 gallons per head per day, it would suffice for a population of 24,000, souls ; 6000 tons of air will pass through her furnaces, rapresenting a volume of. 174,720,000 cubic feet through a pipe lift 4in in diameter. This volume of air would flow at the rate of 138 miles per hour—a strong breeze to walk against. The total weight of water evaporated on the run across the Atlantic -will not be far short of ’ three times that'of the whole ship’s cargo, engines arid all. We give these figures to enable our readers to form some idea of what <13,000 horse power means:';' arid’ we' may supplement them by adding lbat it is . equivalent - to .191,517 tons" lifted a ' foot high every minute, or the same weight lifted 1440 feet in 24 hours;): Assuming that she* makes ’2O knots an hour, or, omitting fractions, 2028 ft per,minute,, the thrust of her screw —that is '.to say, the force pushing her head through ‘the water-—will amount to over ninety-four tons, or as much as twenty of the most powerful locomotive' engines in* England would exert if all were pulling at her together. Among the other difficulties which crop up when we have to deal with such enormous powers as the figures represent, we mention that of getting the coal to the fires. We see that in the case of the Oregon rio less than 300 tons will have to bo handled hours. If the ——slrqrwefe at lest the -problem would riot be of easy solution, but it becomes very hat’d indeed to deal with in a rolling and pitching vessel. All is done, of course, that can be done in arranging boilers and bunkers to. accommodate each other, but it is evident at a glance that out of a total quantity of, say, 2500 tons of coal, a great .deal must be stowed at a considerable distance from the furnaces.