Smit Houston

Smit Houston

16,000 ihp tugs
Bollard pull 138 ton

Principal dimensions
Length o.a. 67,50m
Length b.p.p. 58,50m
Breadth mld. 14,20m
Depth 6,90m
Draft 5,80m
Class Lloyds 100A1 Tug
Year of construction 1977

This 16,000 ihp ocean-going salvage tug has been designed especially to
perform towages with very heavy objects over long distances and tor salvage
assistance to ships in distress.

The propulsion machinery consists ot two Stork-Werkspoor TM 410 turbocharged,
tour stroke, single acting, unidirectional diesel engines. Each engine drives
a tourblade variabie pitch propeller turning in a tixed nozzle. The machinery
may be remotely controlled from the bridge deck as weIl as from an airconditioned
control room in the engine room.

Engine Room

Control Room

The twinscrew-arrangement combined with two rudders and a powertul 525 hp
bow-thruster guarantees excellent manoeuvrability.
The wheelhouse is situated amidships which allows an excellent viewover
the afterdeck as weIl as forward, for bridge controlled manoeuvring.


Towing Arrangement
The tug has two newly developed towing winch-systems consisting of one
storage drum and two friction drums, which are all electrically powered.
Each winch- system carries an 8 1/4" circ. special high grade towing wire of
1,200 meters in length. A towing winch for the nylon hawser is placed on the
boatdeck. This winch is equipped with a storage drum for a 55 m. double nylon
hawser (18" circ.). The towing winches can be continuously watched in the
wheelhouse by means of closed circuit TV . Remote control of these winches is
possible from this station.
Additional towing equipment such as wire pennants, chains, shackles and ample
spare wires on electrically driven storage drums to eliminate manual labour
handling are stowed in a special storage hold. The five towrope guide rollers on
the afterdeck are bridge controlled as weIl as the gogrope winches.

Communication Equipment
The radioroom is equipped besides the normal outfit with two S.S.B. transmitters
with an output of 1500 Watt each and several receiversets for long range
A Telex Over Radio unit has been instalIed to ensure direct telex communication.
A fascimile weatherchart receiver will provide up-to-date information about
meteorological predictions.
Fixed and portable FM/VHF sets are available for short range communication.
All cabins, messrooms, salvage and rope stores, galley and important controlstations
are connected by a telephonesystem.

Navigational Equipment
Propulsion, bow-thruster and rudders can be controlled from tour positions on the
bridgedeck. The main console on the bridge includes the automatic pilot, gyro and
magnetic compass repeaters, off course alarm, echo sounder, VHF, internal communication
system, automatic whistle, alarm lights for main engines, navigation lights and deck lights.
The radar display unit in the main console can be interswitched with another radar display
unit situated in the navigation desk in the rear ot the wheelhouse where there is also a
Decca navigator, electric log, a second echosounder etc.
A satellite navigation system is instalIed.

Pumping Capacity
A fixed salvage pump of 400 tons/hour with 21/2" and 6" deck connections is installed in
the engine room.
A large amount of transportable diesel and electrically driven pumps as weIl as hydraulic-
electric and airdriven submersible pumps are carried in a special ventilated salvage hold.
The total pumping capacity of the tug is over 1600 tons/hour. Ample lengths of 2 1/2", 3"
and 6" hoses are on board.

Electric Power Supply
The three main ships generators of 750 hp each can supply 380 V or 440 V and by means of a
special connection box the tug is able to supply disabled vessels with electric power .
A 225 KVA 440 V generator normally used for harbour duties is instalIed.
An 84 KVA 440 V transportable generator and three 7,5 KVA 220 V generatorsets are stored
in the salvage hold. Ample lengths of electric extension cable are carried on board.

Compressed Air Supply
Two double stage electrically driven compressors of 150 m3/hour each are installed in the
engine room. Deck connections are fitted.
A troansportable diesel driven compressor of 290 m3/hour and a transportable electrically
driven 290 m3/hour plus ample lengths of air hose are on board as well as an airmanifold with
eight connections.

Three monitors with special heavy duty foam branches are placed on high platforms and are
connected to a firefighting pump of 400 tons/hour with a pressure head of 14 ato.
A foam compound-tank of 10 tons with a piping system to monitors and deck stations and a
special foam liquidpump is instalIed. Apart from the normaI 2 1/2" firehose connections on
the decklines, two distribution stations are positioned on the boatdeck with six 2 1/2" ,
connections each.
Portable foam and powder extinguishers, nozzles, ample length of hose, fireprotection units,
helmets etc. are carried.

Ground Tackle
Two special type salvage-anchors are stored within reach of the deckcranes. Two sets of beach-gear,
anchor wires, wire stoppers etc. are carried.

Fresh Water Supply
The tug can supply approx. 70 tons of fresh water and has an evaporator with a capacity of
producing of 10 tons per day.

Hydraulic Deckcranes
Three hydraulic deckcranes with a maximum jiblength of 12 meters and a maximum lifting capacity
of 5-8 tons can serve the various storelockers, the two 30 hp workboats, salvage-anchors and a
20 hp rubberboat.

Repair Facilities
A workshop adjacent to the engine room is well equipped with a lathe, drilling and sawing
machines, plaining machine, electric and oxy-acetylene cutting and welding plant etc.
Two complete sets of diving gear with a diving compressor are on board. Ample patching and
sealing material is available.


Oil Dispersant Equipment
The tug also carries some 10 tons of oil dispersant tagether with a spray system to be
utilized in case of an oilspill.

Tekst is overgenomen uit de folder over de Smit Houston van Smit Internationale.
Uitgegeven april 1980

Artikel uit de sleeptros van februari 1977, over de tewaterlating van de Smit Houston

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