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Technical Information Esso den Haag (2)
T.S.S. “ESSO DEN HAAG”
Biggest Netherlands ship afloat, built for Esso Nederland N.V., by
Verolme United Shipyards, Rotterdam.
From : Holland Shipbuilding
Built by the Verolme United Shipyards at Rotterdam the largest unit in the Netherlands merchant fleet, the turbine driven oil tanker Esso Den Haag was recently commissioned after having been christened by H.R.H. Princess Beatrix of the Netherlands.
Taken over by the Esso Tankvaart Maatschappij N.V., The Hague, the vessel is the third in a series of three mammoth tankers all built at the Verolme yard, Rozenburg. The vessel differs from her sister ships in so far that all accommodation has been arranged in the aft ship and her twin funnel design gives the vessel a striking appearance. Of welded construction with six riveted seams and riveted gunwale plate, the vessel has the following leading characteristics:
 The Ship has been built to meet the requirements of the American Bureau of Shipping and those of the Netherlands Shipping Inspection. The construction and arrangement furthermore comply with the regulations of the British Ministry of Transport, the International Load-line Convention, and the 1948 International Conference on Safety of Life at Sea.
The Esso Den Haag is of the single continuous freeboard deck type with poop and extended forecastle. The vessel has a bulbous bow and the cargo space is divided by two longitudinal and fourteen transverse bulkheads into 39 cargo oil compartments separated from fore and aft-ship by two cofferdams. Maintenance has been kept down to a minimum by the use of Vettewinkel's Colturiet coating. Colturiet zinc was used as a shop primer, having a film thickness of 15-20 microns and applied immediately after grit blasting of the steel plates. This compound is claimed to offer full protection against corrosion over a period of at least one year and parts remain fully weldable. Hull and tanks have received the following treatment:
one coat of Colturiet Zinc having a thickness of 15/20 microns;
one coat of Colturiet G.P. Aluminium sealer of 20/30 microns;
one coat of Colturiet TCN-100 brown coaltar of 100 microns;
and one coat of Colturiet TCN-l00 black coal-tar of 100 microns.
Where the Colturiet Zinc offers excellent protection against corrosion, the combination of G.P. Aluminium and TCN-lOO provides resistance against water, black petroleum products and abrasion. The hull was finally completed with a suitable bottom boot topping and topside paint. The entire system was applied by airless spray and more than 160,000 sq.m. were treated being the biggest application being made so far in the Colturiet field to a tanker.
The Esso Den Haag has no dry cargo hold installed in fore ship and the fore ship and the forepeak has a capacity of 2,308 tons having been arranged for water ballast. A total of four deeptanks have been arranged in the fore ship having an aggregate capacity of 266,336 cu.ft. for fuel oil or water ballast. A separate forward pumproom has been arranged between the deeptanks and the forward cofferdam and houses the dry well for the echo sounding equipment. The side cargo oil tanks Nos. seven and eight have been permanently arranged for ballast. Furthermore arranged in the aftship are two fuel oil bunkers in the sides and fore part of the engine room with a total capacity of 60,575 cu.ft. and fuel oil settling tanks having a capacity of 22,791 cu.ft. as well as after fuel bunkers of 570 tons of fuel capacity; a 302 tons after peak tank; and an 85 tons distilled water tank.
The vessel's stern frame is of the “clear water” type and has been cast in four pieces having a total weight of 200 tons.
Cathodic protection is by 48 zinc anodes and inspection of the stern frame has been very severe by Magnetic particle, Ultra Sonic and Radiographic methods. The rudder is carried in a Hastie rudder carrier and has a total surface of 660 sq.ft. The total load carried by the rudder carrier, including rudder and rudder stock, is approx. 90 tons.
Six decks have been provided in the aftship superstructure. On the main deck stores, lockers, 31 crew cabins and bathrooms, a dry provision room and the refrigerated store rooms have been arranged; the poopdeck accommodates eight petty officers' cabins, three junior officers' cabins, pantries and messrooms for crew, petty officers and officers. Staff engineers' cabins and the Chief engineer's suite have been arranged on the boatdeck while the cabins for the navigating officers have been arranged on the bridge deck. Also provided on the bridge deck are the hospital, the ship's office, and the chief and second steward's cabins.
The upper bridge deck houses the Captain's and Owner's suites, the radio room and the cabin for the wireless officer. A pilot cabin and bathroom has been provided on the navigating bridge deck where the combined wheelhouse/chartroom has also been arranged. A swimming pool has been provided on funnel deck level. A fore and aft gangway has been constructed in order to provide safe passage between forecastle and accommodation. Four shelters have been provided for protection against occasional heavy seas.
The ship carries three bower anchors of 10,600 kg each, two of which are fitted to 35/s-in. Tayco anchor chains. At the loading station amidships, two unstayed King posts carry two 10-ton hose handling derricks and a five tons derrick has been placed aft of the forecastle carried by the fore mast which is fitted with a crow's nest. For the handling of stores and engine spare parts a 2-ton transverse gantry has been installed on the poop. The engine room has a fully automatic, self-service elevator with five stations and a safe load of 600 kg. The accommodation is fully air-conditioned by a Van Swaay installation comprising three separate 39M units installed in the aftship accommodation. The installation is based on the following conditions:
In summer, maximum outside conditions 95 degr. F., dry bulb, 85 per cent R.H. inside conditions 85 degr. F., dry bulb, 50 per cent R. H.
In winter, outside condition 0 degr. F., interior temperature 70 degr. F.
The various capacities of the installation are from nine to twelve air changes for the cabins and from twelve to fifteen air changes for the public spaces. Cooling and de-humidifying of the air is on the direct expansion system with F-l2 the refrigerant.
Also installed in the fan rooms is a Carrier compressor with automatic capacity control and a sea water cooled condenser.
The total refrigerating capacity of these compressors is 1,055,000 BTU/hr. The total length of the duct system installed for air conditioning system as well as the exhaust systems exceeds one kilometre. In the cabins the latest type of the Acclimax high
nduction outlet has been installed combining low sound level and effective air distribution.
Separate systems with mechanical supply and exhaust ventilators have been installed for the galley, stores, work and sanitary spaces, with a total capacity of approx. 12 Hp.
The fore and aft pumprooms have been equipped with two explosion-proof ventilators with capacities-of 10,500 cu.m./hr. and 37,500 cu.m./hr.
The provision refigerating plant is made by Koelvriesvan Swaay and serves three cooling rooms, viz. the meat room:
capacity 2,373 cu.ft., temp. 0 degr. F.
the vegetable room: cap. 2,236 cu.ft., temp. 35 degr. F.
the handling room: cap. 1,775 cu.ft., temp. 42 degr. F.
Moreover the plant serves: boiler testwater cooler, capacity 40 US gallons, in which daily 40 US gallons of boiler water have to be chilled from 77 degr. F. to 39 degr. F. The provision refrigerating plant is of the direct expansion type with freon-12 as the refrigerant and is served by two refrigerating units, viz.
one unit serving:
the handling room;
the vegetable room and the boiler testwater cooler.
one unit serving:
the meat room.
If necessary the sets can be interchanged.
Each unit consists of a single acting Electrical driven Carrier compressor, type SF20, with automatic capacity control, and a seawater-cooled condenser with in the cooling rooms finned type aircoolers and in the meat room evaporator plates.
The plates in the meat room can be defrosted by means of hot gas from the compressor discharge line.
The capacities are based on the following conditions
Max. ambient conditions:
100 degr. F, 80 per cent RH.
Max. seawater temperature: 90 degr. F.
The Esso Den Haag carries four glass-fibre re-inforced plastic life-boats two of which have been equipped with air cooled Coventry Victor 2-cylinder Diesel engines type VIXEN HDA Mk. II. The vessel carries extensive communications and navigational equipment including the Svenska transmitter type MT 250, Renovas the emergency receiverm, two communications receivers, Marconi automatic alarm equipment Seaguard, the VHF equipment Argonaut and the Lodestone radio D.F. Other equipment includes two portable life-boat sets Marinetta and the Kelvin & Hughes echo sounder type MS26B with shallow water indicator.
The fire fighting equipment and system layout of this vessel is extensive. A foam system has been arranged for cargo fire protection.
For this purpose a foamtank with a capacity of 1100 Us gallons, a foam proportioning pump and a nozzle type foam proportioner have
been provided. In conjunction with the main fire pump having a capacity of 1200 gpm, a 3 per cent foam solution can be discharged
into the foam main lines on deck. Ten fixed monitor nozzles were fitted in order to obtain a complete foam coverage of the entire
upperdeck. The four monitor nozzles fitted on top of the shelters of the fore and aft gangway can be operated from a position inside
the shelters. An emergency diesel driven foam fire fighting unit has been installed in the forecastle space. Below in the foreward
pumproom a hydraulically operated booster pump has been installed discharging into the suction line of the emergency fire fighting
unit. A special watermist system has been provided for both pumprooms and deck store rooms. Boiler room, engine room and
emergency diesel generator room have additional CO2 fire fighting equipment.
Cargo handling is effected by three main cargo oil pumps each having a capacity of 11,000 US gpm seawater at a discharge
pressure of 150 psig. Each pump is driven by a 1,300 h.p. Werkspoor turbine. The clean ballast tanks are served by a separate
turbine driven ballast pump having the same characteristics but rated at 9,200 US gpm against 106 ft. of waterpressure. The cargo
handling system furthermore consists of three main pumping groups having 20-in, main lines and 16-in, main branch lines. The 18-in, discharge lines to the deck manifolds are running through the wingtanks near the ship's neutral axis. The cargo valves have ductile cast iron housings and all valves of 10-in, bore and above have been executed with flexi-ring seatings. A separate twin-group stripping system has been provided and includes two 1400 US gpm at 150 psig stripping pumps. These stripping pumps have separate valve boxes for small clearance volume, steam slide valve friction dampers and special rotary type valves. All 16-in, main suction valves installed in the cargo tanks are hydraulically operated. This hydraulic system consists of a dual power pack unit, installed on the fidley top between the two stacks; a separate control unit for each valve; the actuator -of the rotary type with stroke-limiting device on top of each specially adapted valve. The main hydraulic supply and return lines are running along the fore and aft gangway and are made from extra heavy steel. Branch lines are from Cu-Ni with stainless steel 0-ring coupling. No heating coils have been installed in the cargo tanks.
The machinery installation of the Esso Den Haag has been carried out by the Verolme Engineering Company of IJsselmonde.
The main propulsion machinery consists of a cross-compound double reduction geared Werkspoor turbine installation in principle
identical to the installations installed in the Esso Hampshire, and the Esso Libya and described in detail in Holland Shipbuilding
of November 1962. The installation is designed to develop a normal output of 24,000 s.h.p. at 105 r.p.m. and develops a maximum
continuous output of 26,500 s.h.p. at 108.5 r.p.m.
The turbine is of the Pametrada design, the HP turbine being of the double shell construction with a Curtiss wheel followed by eight impulse stages. The LP turbine with five impulse and four reaction type stages has a welded outer shell and a cast steel inner barrel in which diaphragms of all welded construction have been fitted. There are four extraction zones on the turbine casings to provide for four stage feed heating and other bled steam requirements. The astern element which is situated at the forward end of the LP turbines consists of a Curtiss wheel plus two impulse stages.
The main gearing is of the double reduction articulated type with hobbed double helical toothing. The second reduction gear wheel
consists of a forged carbon steel rim welded on a webbed (four webdiscs) fabricated mild steel spider and a hub of forged carbon steel.
The main thrust bearing is located aft of the gear case. The 24-in line shafting is supported by double lubricating oil ring steady bearings.
The four bladed right-handed Cunial bronze Lips propeller has a diameter of 7,500 mm. and a weight of 33 tons.
Steam is generated in two integral furnace boilers. Each boiler has a normal capacity of 95,000 lbs. of steam per hour and an overload
capacity of 150,000 lbs. of steam per hour. The working pressure is 850 psig at the superheater outlet and temperatures are 860
degr. F. at normal load and 890 degr. F. under the overload condition. Three boiler forced draught fans, are placed in the emergency
generator room on the boat deck. Each fan is driven by a 2 speed 70/250 h.p. electric motor. The combustion air is pre-heated to 250
degr. F. by a steam heater with Cu-Ni tubing. The B&W Diamond soot blowers with G9A heads for the generating banks and the gas
air-heaters are pneumatically operated by Telektron equipment. Desuperheaters of the coil type have been fitted in the waterpockets.
All steam pumps in engine and pump rooms are of the non-lubricated type and are turbo driven just like the deck machinery.
The main cooling water circulation pump is driven by a 2-speed 105/215 h.p. electric motor. All valves of the main cooling water lines
are of the butterfly type. The main and auxiliary condensor circulation lines as well as the waterboxes of the condensors are neoprene
rubber coated. The remaining cooling water circulation lines are of a Cu-Ni alloy.
For operation in conjunction with the main propulsion plant, a four stage feed heating system, giving a final feed temp. of 400 degr. F. has been fitted.
Fresh water is made by two 3-stage Flash type seawater evaporators.
Turbo generators. Electric auxiliary power is generated by two 1250 kVA geared turbo-alternator sets, situated on the SB machinery
flat.
The Werkspoor driving turbines are of the condensing type and exhaust into the main or auxiliary condensor.
The 450 Volts - 1200 r.p.m. A.C. generators are of the totally enclosed type; two built-in heaters prevent condensation
during shutt-off periods.
The generator aircoolers were mounted underneath the machinery flat and are of the double-tube type, with Cu-Ni innertubes and
brass outer tubes, designed and manufactured by the generator maker (Smit Slikkerveer).
At the lowest point in the cooling air system a moisture detecting cell has been fitted, which actuates an alarm if a leakage in the air circuit should occur.
The generator field actuation and the control is of the static type; the exciting and regulating gear was mounted in a cubicle, placed in the main switch board.
On the main switch board temperature indicators have been fitted for remote reading the generator coil temperatures at 6 points.
On boatdeck level aft of the boiler room a 250 kVA emergency diesel generator set has been installed. The generator is driven by a
12 cylinder Vee-type engine rated for 324 h.p. at a speed of 1,800 r.p.m. The diesel is water cooled.
For starting the engine a fully automatic hydraulic system was fitted. The starting “hydrotor” cranks the engine, when the voltage at the main drops below 85 per cent. Naturally the system was also provided with a hand starting device.
The emergency generator itself is also of the self-exciting automatic voltage type, however, with a small overhung permanent magnetic exciter in case the remanent magnetism of the generator-stator is lost.
EQUIPMENT ON BOARD THE “ESSO DEN HAAG”
(Partial list)
Almetaal N.Y., Amsterdam: Aluminium sections for catwalk and aluminium grids, by Singen G.m.b.H., Germany.
Bloksma. N.Y., Amsterdam: Oil coolers for Werkspoor turbines.
Dikkers & Co. N.Y., G., Hengelo: H. P. boiler and pipeline fittings.
Dijk's Scheepsuitrustingen N.Y., van, Rotterdam: Safety equipment; a two part 16.7 m. accommodation ladder make Marine
Aluminium; a gangway; Industria navigation lights; and ship's bells.
Econosto, N.Y., Rotterdam: Valves and fittings.
Feteris N.y., The Hague: Sperry lVIark XIV Model 2 Gyro Compass and repeaters, Sperry course recorder and Dual Gyro Pilot.
Franse, T., Amsterdam: Two air-cooled Coventry Victor lifeboat engines.
Goodwill Schuimrubber N.Y., Rotterdam: Foam rubber for upholstery.
Grootenhuis, Rotterdam: Blakeborough cargo valves.
Hobart N.Y., Rotterdam: Hobart mixer and accessories, potato peeler and cutting machine.
Hoop, A. de, Rotterdam: 3-phase electric starting equipment.
Hygiënische Vloeren N.Y., Amsterdam: Fire resistant floors.
IMEA, Hattem: Galley equipment.
I.N.A., Rotterdam: Decca Radar 969 and 808.
INHAM, The Hague: Torsion meter of AEI, Turbine driven Clarke; Chapman deck machinery, Walter Kidde CO2 installation and John Hastie steering engine and rudder carrier.
Koopman & Co. N.Y., Amsterdam: De Laval oil separator and IMO pumps.
Kwant Bros., Sneek: Electric lamp type ship's telegraph installation.
Lips, Drunen: Right handed, 4-bladed Cunial Bronze propeller.
Mulder & Rijke N.Y., IJmuiden: Four re-inforced plastic lifeboats.
Plaisier, N.Y., The Hague: Two salino measuring installations.
Radio Holland, Amsterdam: Communications and electronic navigation equipment.
Stork & Co. N.Y., Hengelo: Pumps.
Swaay Airconditioning, van, The Hague: Air-conditioning equipment.
Trost & Co. N.Y., L., Rotterdam: Vynide for upholstery.
Vaillant & Sluyterman, The Hague: 4 sets Welin pure Pivot Gravity Davits and one Götaverken Lodicator.
Vettewinkel, Amsterdam: Colturiet tank coatings.
Vlieger N.Y., Ingenieurs Bureau, Amsterdam: Taylor anchor chains.
Werkspoor N.Y., Amsterdam: Main steam turbines, air ejectors, turbo alternators' turbines, evaporators.
Winel N.Y., Assen: Winel tank air vents.
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