Huggett, W. S.

English

University of New Brunswick: Centre for Digital Scholarship Journals

In tern a tio n a l H ydrographic Review , M onaco, L X III(2 ) , Ju ly  1986CSS “JOHN P. TULLY” A HYDROGRAPHIC AND GEOPHYSICAL RESEARCH VESSELby W.S. HUG GETT (*)THE SHIPPrincipal ParticularsLength overall...................................... .... 68.9 mLength w aterline...................................... 62.0 mBreadth m oulded ............................... .... 14.0 mD ra f t ............................................................ 4.5 mDisplacement — loaded .................. .... 2 100 tonnesShaft p o w er............................................... 3 000 HPShaft rev s ............................................... ....230 rpmTrial speed ............................................. ....13.6 knotsEndurance ................................................. 120 daysR a n g e ..................................................... .... 12,000 milesComplementO f f i c e r s .......................................................... 9Crew ................................................... .... 16H ydrographers.................................... 15Classification........................................  Lloyd’s 100 A1Lloyd’s Ice Class 1* LMC-UMS Non-passenger, Hom e Trade I Arctic type “A”, Foreign-G oingMachineryM ain propulsion 2 Deutz model SBVM628 diesel engines1150 KW 91564 H P @ 900 rpm(*) C an ad ian  H y d ro g rap h ic  Service, Sidney, B.C., C anada.Fig. 1. -  CSS John P. Tully.1 Reintjes model DVA 335B with 3.918:1 ratio1 K aM eW a controllable pitch four-bla- ded , d iam eter 2 500 mm turning in nozzle3 Caterp il lar  diesel-driven AC sh ip ’s service generators 1 C aterpillar diesel-driven AC em er­gency generator 1 O m nithruster  500 H P  horizontal bow thruster1 O m nithruster  350 H P  vertical stern thrusterThe Tully is designed primarily for hydrographic  surveying on the west coast o f  C an ad a  and  in the W estern Arctic. The secondary purpose  o f  the vessel is to carry out geophysical surveys in the N E  Pacific Ocean.The design consultants for the vessel were Cleaver and  W alkinshaw Ltd. o f  Vancouver, B.C., and the builders were Bel Aire Shipyards Ltd. o f  N orth  Vancouver, B.C. Design talks began in 1981 and the vessel specifications were com ple ted  in 1983. The contract was placed with the shipyard in Novem ber o f  thatR eduction  gear PropellerAuxiliary pow er Thrustersyear and she was launched in October, 1984, and handed over to the Departm ent of Fisheries and Oceans in May, 1985, after the successful completion of her acceptance trials. In July, the vessel sailed for the Beaufort Sea in the Western Arctic.One o f the main design characteristics to be resolved before conceptual drawings could take place was whether a helicopter should be carried aboard or not. It was decided that on the West Coast o f Canada and in the Western Arctic hydrography would only have need for a helicopter landing-pad with no re-fuelling facilities. In other words, no helicopter would be permanently carried aboard the ship. This decision then made it possible to have a clear working deck aft by placing the helicopter-pad forward, and also dispensed with the complex fuelling system, fuel tanks and hangar that are all part of carrying a helicopter to sea. The next decision involved the amount of ice strengthening required. After much discussion it was decided that Lloyds ice strengthening Class 1* would be sufficient. The reasoning was that the vessel would always enter Arctic waters in the company o f an ice-breaker, and would only work in ice-free waters.The Tully has a normal bow and a transom  stern. The hull is divided into five watertight compartments with ten fuel oil tanks, seven water ballast tanks and two fresh water tanks. There are five decks, of which the lower three are constructed of steel — to the helicopter landing deck — and the upper two are of aluminium construction. The after deck is the main working deck and has a 10-tonne crane and four ‘A’ frames, provision for carrying seven hydraulic winches, and a 6-metre (20-foot) standard container. There is a hydrographic chartroom  just below the bridge, an electronic workshop, a dry lab, a wet lab and a gravimeter room. There are also separate lounges and messes for the officers and crew, a sauna and a gym. Four alum inium  9-metre survey launches are carried am idships and are also fitted out to serve as lifeboats. When not on hydrographic surveys, only two of the launches need be carried.The wheelhouse is exceptionally large (110 sq. m.) with windows all round for good visibility. There are three steering and ship manoeuvering consoles. One, the master console, is on the centre line forward and the other two are on the starboard and port sides at the after end o f the wheelhouse. All the ship’s radios are fitted into three racks across the after end of the wheelhouse with remotes going to all the steering consoles, chart table and forward starboard bulkhead. In addition to the standard navigation instruments (see list), an Integrated Navigational System (SN 81) is fitted that includes a digitizer to construct electronic charts for viewing on the video display which, at the same time, also shows the courses that have been fed into the SN 81. The SN 81 also gives a printout o f the vessel’s position and, when coupled to the auto-steering, will keep the vessel on the given courses. The vessel is also outfitted with two automatic direction finders and a citizen’s band radio for search and rescue work.Radios fitted on the ship are:I.T.T. Model MSR8000Skanti Model 52835 (2)I.M.R. M icrotor1 KW H F/SSB  250W H F/SSB  teletype system teletype systemGlenayre Model GL1142 Sailor Model RT145 (3) V H F/FMoUrnMAIN DECKICOM  M odel M80Collins M odel 251 (2)Intech M odel 1511Navigational aids fitted on the ship are:JRC SN81 Integrated Navigation System JNA-104 Omega JNA-760 Loran C JLE-3200 SatNav dual channel Sperry M K 227 gyros (2)MK 340 radars (2) X and S band Furuno C l -30 Doppler logTaiyo M usenTD-C338 M F /H F  automatic direction finder TD-L1620 VHF autom atic direction finder Alden WeatherfaxRaytheon DSF6000 dual frequency echo sounder.The hydrographic chartroom is divided into two parts. The plotting tables and “command position” when the Tully is running sounding lines are on the starboard side, and the com puter for data processing and the plotter are all on the port side. The “com m and” post has two echo sounders, one for shelf work on 24 and 100 kHz and one for deep work on 12 kHz. The racks for the positioning system are also here.Just aft o f the chartroom  is the electronic workshop which, besides having a workbench and electronic rack for test equipm ent, also houses the electronics for the two gyro compasses, ship’s telephone system and electric clock system. The wiring from the transducers for the echo sounders on the bridge and hydrographic chartroom all term inates here in a patch panel. The bridge and chartroom  sounders are the same models — different frequencies — so that these two sounders are now interchangeable if one or the other should break down.The wet lab is directly under the after end of the bridge house. The hydrographic winch (bottle) and chains are just forward o f the launches and are situated under the deck to deckhead windows on the after starboard side of the bridge which give a clear view to the bridge of this bottle station and wire angle. The wet lab has non-skid tiling on the deck and stainless steel bulkheads, bench and sink. This lab, when the vessel is on hydrographic surveys, doubles as a storeroom for survey equipm ent with easy access to the launches.On the same deck as the wet lab are the ship’s officers’ and the chief hydrographer’s quarters. Between the launches are the emergency generator room, battery charging room, paint locker and emergency survival suit storage.On the main deck are the officers’ and hydrographers’ messes and lounges, hydrographers’ cabins, gym, sauna, ship’s office and the m ain lab. The m ain lab is a large room (77 sq. m.) with benches around all four bulkheads, with the centre o f the room fitted out to take electronic racks. There is a cable tray set into the deck head that allows the easy distribution of cable leads from the racks to the benches or through ports to the outside decks. These cable trays are part o f the total cable tray system that runs from the mast to the transducer space with offshoots on each deck for the installation of temporary wiring or cable runs. The bench on theV H F/FMV H F/A M  with AC beacon 2182 guard receiver.starboard side of the lab is stainless steel with two sinks and a fume hood, and a desk on the forward bulkhead is fitted out to take the recorders o f the 12 kHz and 16 x 3.5 kHz array of transducers. There is also a VDU from the SN 81 and a repeater from  the doppler log. The m ain lab also has the master com puter for the SAIL (Serail /4scii interface lo o p )  loop that is fitted to the vessel. There are twenty outlets on the loop to which various sensors can be coupled and read sequentially at specific time intervals. Permanently coupled to the loop are air tem perature, hum idity, wind speed and direction, barometric pressure, sea tem perature and conductivity, ship’s course, speed and  latitude and longitude. This inform ation is displayed on VDUs in the wheelhouse, hydrographic chartroom and the two labs.On the lowest deck are the stewards’ storerooms, galley, crew’s mess and lounge, and the crew’s cabins. These cabins are single occupant as are all the crew’s cabins on the vessel. Only the hydrographers’ cabins have pullman berths to allow for double occupancy.Just forward o f the M achinery Control Room (M CR) is the transducer space where transducers for 24, 40, 100 and 200 kHz for the shallow sounders, the doppler log which is flush m ounted with the hull, and two 12 kHz and 16 3.5 kHz transducers are wired. There are also two 18-inch rams that can protude 1 m below the hull and are wired for additional transducers, if required. These can be added or changed while the vessel is at sea. Two Salt Water pumps for the scientific SW loop in the labs are also in this space, and all piping connected with the SW loop is insulated to allow tem perature measurements to be taken in the labs.Machinery SpacesBelow the m ain deck forward is the bow thruster compartment, and aft of this is the forward machinery space which houses the domestic fresh water pumps, refrigeration, vacusan system and two reverse osmosis fresh water makers capable o f making 14 tons of potable w ater a day.Forward o f the engine room is the M achinery Control Room which, besides housing the pneum atic engine controls by PMC, also has the ship’s electrical switch boards. The engine room, being an U nm anned M achinery Space (UMS), is m onitored by two TV cameras with the display on the control console. The machinery m onitoring system is by N ORTEK and monitors all machinery, tanks and alarm  systems, displaying the inform ation on a VDU. There is also a hard copy printout. Alongside the M CR is a separate room housing the harbour generator, a Caterpillar 3412 to a Stanford alternator. Two similar generating sets, also 450 kW, are in the engine room and an additional 800 kW Stanford alternator is m ounted on the starboard engine to run, primarily, the bow and stern thrusters. Emergency power is supplied by a 140 kW Caterpillar 3306 and Stanford alternator.The main propulsion is two Deutz 628 8 cylinder in-line engines coupled to a single shaft by a 3-1 reduction via a Reintjes gear box. The engines produce a total o f 3100 H P at 900 rpm. Either or both engines can be used by engaging or disengaging Vulcan friction couplings. The propeller is a four-bladed skewed type CP Kamewa operating in a Koit nozzle.The steering is by Wagner, a hydraulic ram system coupled to a triple rudder. This system gives very positive steering with very little helm.O ther features on the vessel include an incinerator for waste disposal, a FAST sewage treatm ent system, PACE oily water separator and a fuel monitoring system by Econometer.

CSS "John P. Tully" A Hydrographic and Geophysical Research Vessel

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CSS "John P. Tully" A Hydrographic and Geophysical Research Vessel

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