1. Ship Auxiliary Systems
TOP TEN in respect to space demand are
Electric power generation
Exhaust gas pipes, EG boilers
Sea water intakes, main SW duct
Central coolers
Centrifuge purifier room
Machinery control room, Main switchboard
Oil fired steam boiler
Fuel oil tanks
Ventilation air channels
Fin stabilisers

2. Ship Auxiliary Systems
Systems that need closer look here due to
1) Big space demand in engine room or otherwise influence on machinery arrangement
2) Expensive systems or with high energy demand
Such ship auxiliary systems are
Bilge system
Ballast water system
Automation and control system
Main switchboard and Starter boards
Steam and feed water system
Fresh water generation (in cruise liners)
Do not forget overhaul and transportation routes!

3. Bilge System purpose location main components design problems
Remove water from engine room or any compartment other than tank. Dimensioning acc. Class rules.
Cleaning oily bilge water before discharge to sea. Engine room emergency draining with largest, often S.W. cooling pump
location
Pipeline through all ship. 2 pumps in engine room, valves in pipe tunnel or engine room
Special requirements on passenger ship (extra pumps)
main components
Piston pump, centrifugal pump, bilge water separator, tank. (Ballast water or General service pump is often utilised as spare bilge pump)
design problems
Occasional suction problems. Pipeline arrangement in confined aft ship
operation problems
Frequent alarms from too small bilge wells. Bilge water separator cannot handle e.g. detergents.

4. Bilge System - valves in engine room
Suction from wells SW cooling line BW lines to P,SB, aft Piston bilge pump
Bilge valve chest
Change-over valve chest
Bilge water separator & oil monitor
Bilge water tank
Mud box
Bilge suction
Bilge valve chest to holds
Emegency suction with largest SW cooling pump
Suction head
Water separator side valve Side valve BW pump & BW lines

5. Engine room bilge system, icebreaker
Funnel drain pipe
Three way valve controlled by oil content monitor
Bilge water pumping to shore P&S
Side valve
Bilge water tank
Bilge water separator
Sea water rinsing
Piston pump 5 m3/h
Large pipe >NS 50
Small pipe <NS 40
To bilge water tank in double bottom
Insulated and trace heated pipe
Eccenter pump 5 m3/h
From bilge wells
From main bilge line

6. Bilge System
Piston bilge suction Bilge water separator

7. Ballast Water System purpose location main components design problems
Control ship draft, trim, heel for safe sailing and swift loading/unloading. Stability rules limit the maximum tank size.
location
Pipeline through the ship.
Two pumps in engine room, valves in pipe tunnel or engine room. 6 … 10 deep tanks widely distributed. Ring line must be inside B/5.
Pumps can also be in fore pump room (pax ships) or cargo pump room. Roro ships have often anti-heeling tanks as separate high capacity system.
main components
Centrifugal pump
Possibly high capacity heeling pumps / air compressors
design problems
Occasional suction problems.
operation problems
Very seldom

8. Ballast Water System Dry cargo ship BW system with valves in pipe duct
(simplified)
Side valve BW pumps Engine room BW tanks Pipe duct
Aft peak tank Sea chests Filter BW ring line Fore peak tank

9. Ballast Water System
Dry cargo ship BW system with valves in engine room
(simplified)
Side valve BW pumps Engine room BW tanks
Aft peak tank Sea chests Filter BW pipes Fore peak tank

10. Ballast Water System
Double bottom pipe duct in dry cargo ship

11. Bilge and Ballast Systems Location
Cargo area BW pumps in tank area. Their sea chests below sloop tanks
Oily water Bilge BW separator pump pump
Aft peak tank
Ring line pipe to all DB and fore peak BW tanks is led through BW tanks. Submerged valves
Oily water Bilge BW separator pump pump

12. Automation and Control System
purpose
Collect and process information,
Execute control actions automatically or as decision support system.
location
Cabling and workstations through all ship. Computers in the engine room, heavy duty local control terminals also in engine rooms.
main components
Computers and work stations. Electric and optical cables with routers. design problems
Expensive system, cabling and testing time consuming. Subsystem compatibility problems. Rapid development brings unmature solutions. Finding safe and remote location for cables and routers.
operation problems
Many software related problems. Updating management is critical. Operator skills need constant improvement and better operator interfaces. Systems influence on ship safety.

13. Main Switchboard and Starter boards
purpose
Main switchboard is backbone of electric system, including control and monitoring functions. Starter boards control large electric motors.
location
Main switchboard close to generators in control room (or adjacent space). Due to safety reasons often divided and placed in two switchboard rooms. Other switchboards seldom in engine room. Centralised starter boards in control room or engine room.
main components
Main switchboard
design problems
Main switchboard length, up to 14 meter. Big cables & high ventilation demand increase space problems.
Emergency conditions -arching, short circuits.
operation problems
Seldom systematic problems.

14. Emergency Generator and Switchboard
purpose
To supply and distribute electric for vital consumers when power plant is not available. Capacity and operation regulated by Class and SOLAS
main components
Emergency diesel generator with automatic start located above main deck. Access from open deck, self-contained plant.
Emergency cells located above main deck. Supply power after main voltage loss, until emergency generator operates.
Sufficient alone in some small cargo ships.
Emergency switchboard, located near the power source. Sections:
400V ES1 feeds fire pump, bilge pump, steering gear and other emergency consumers
240V ES2 feeds navigation instruments, fed by ES1
240V ES3 feeds alarm system, emergency & navigation lights, fed by ES2 or cells
operation problems
Starting failures of emergency generator / emergency fire pump

15. Main Switchboard and Starter boards
Main switchboard for 2 generator ship - total length 9 meter
Starters & Shore GEN GEN Shore Starters & V Section Feeders Supply P Supply SB Feeders
To Emerg. board Bustie To 220V Section
Normal cubicle height is Free 300 mm space above and 400 mm below the floor plates required. Cubicle breadth is 600 or 800 mm
Add 1 cubicle for each generator. 2 cubicle if main switchboard is divided in halves. 3 …4 cubicles and transition piece if halves installed in separate rooms.
Medium voltage (>1 kV) switchboard is abt. 20 % longer. Cubicles 800 or 1000 mm
Separate starter boards: cubicle (600 mm) for … 3 motors.

16. Generator and Switchboard Location
Emergency diesel generator and switchboard
Cargo Main Transformers Automation control room switchboard board
Main Control Cargo pump Desk converters

17. Generator and Switchboard Location
3 diesel generators on level 9000 mm
Shaft generator

18. Steam and Feed water System
purpose
Generate and convey thermal energy to consumers
Water steam is practical. Alternatives are thermal oil and (for MDO ships only) hot water
location
Main components often in main engine room instead of dedicated spaces. Insulated pipes are lead to consumers through all ship.
main components
Normally two oil fired boilers and exhaust gas boiler for each main engine. Water tanks and pump assemblies
design problems
High capacity boilers and exhaust gas boilers (including overhaul space) cause space problems in passenger ships.
Pumps location on low level can also be difficult
operation problems
Feed water related problems
Exhaust gas boiler fouling and soot fires

19. Typical Steam and Feed Water System
Mixing does not allow too cold water in boiler
Gas outlet temperature 180oC
Steam to consumers
Preheating section
Evaporation section
SW cooled dumping condenser to handle excess steam
Oil fired boiler (auxiliary boiler)
Circulation pumps
Condensate tank Feed water tank
Return from consumers
Cooling coil
Feed water pumps

20. Steam and Feed Water System Capacity
Most ships never use all oil fired boiler capacity. Large boilers in crude oil / black products tankers. Exhaust gas boilers operate dry, use dumping condenser or by-pass.
Calculate for each consumer group, see table kg steam = 2260 MJ

21. Oil Fired Boiler Dimensions
Steam collecting space
Finned water tubes inside the some tubes
Furnace
Brickwork
refractory

22. Steam Boiler and Feed Water Pump Location
Oil fired boilers Exhaust gas boiler Surplus steam Feed water condenser pumps
Feed water tank

23. Fire Protection
To activate fire alarm and permit early and efficient fire extinguishing.
Ship divided in machinery spaces, cargo space, accommodation (each with multiple fire zones).
Fire water system required in all ships. Needed also for cooling of structures. Number and capacity of pumps according to rules. Secondary system is always required.
Carbon dioxide: all fires, efficient in enclosed space, lethal, testing difficult
Water fog: newcomer, all fires, non-toxic, complicated plant, testing easy
Halon: efficient, mildly toxic, banned due to ozone layer depleting effect
Foam: various foams for various purposes, difficult after cleaning
(Powder)
Total flooding (Space) extinguishers  Local extinguishers
Local compulsory in existing pax vessel by October 2005
Manual release  Automatic release

24. Fresh water systems purpose location main components design problems
To distillate fresh water from brine utilising waste heat. When waste heat is not sufficient, steam from oil fired boilers is used.
To filter and treat water for safe utilisation as technical or potable water.
To store pressurised hot and cold water for consumers.
location
Large multistage units with sea water pumps located in dedicated rooms. Water tanks distributed in various compartments.
Cargo ships the small evaporators and hydrophores in main engine room.
main components
Multistage units & water tanks in cruise liners. Otherwise small components. Reverse osmosis units: small, demand high pumping power, 300 ppm salt.
design problems
Large evaporator size and high energy consumption.
More stages mean low heat consumption but increase cost and dimensions.
operation problems
Evaporator maintenance, bacteria contamination would be disaster.

25. Multistage evaporator Fresh water system
Fresh water systems
Multistage evaporator Fresh water system
Land connections Port and Sb
Technical water
Filter Hydrophore
UV unit
Evaporator
Mineralisation
Chlorination
Dimensions
Transfer pump
Storage tanks
Note that single stage units require double length space for opening
Hot Heater Cold water water

26. Overhaul space Service space Important overhaul items must be provided
Main and aux. engine piston
Turbocharger rotor
Charge air cooler inserts
Main and big end bearings
Clutch and coupling elements
Generator rotors
Propeller and intermediate shafts
Exhaust gas boiler inserts
Large sea water pumps
Feed water pumps
Pipe systems, especially HFO, SW
Service space
must be provided
Centrifuge purifiers
Fuel injectors
Fuel oil booster unit
Sea water filters
Piping accessories
Make sure that floor plate and platforms are reinforced for heavy items!

27. Material transport routes
Material transport to workshop and storages
Main engine large spare parts
Auxiliary engine piston
Large valves
Screw pumps
Pump impellers
Tools
Transport to/from land
Main engine large spare parts
Large pumps
Pipe, bar and plate material
Generator rotor
Propeller and intermediate shaft (holes cut in bulkhead may be accepted but no any major component dismantling)
Make sure that floor plate and platforms are reinforced for heavy items!

28. Overhaul and Material Transport
Traverse crane above main engine
(Port) Heavy main engine spare parts secured
Engine Engineer store workshop
Service lift and hatch on main deck
Lift rail above each genset, leading to ME traverse crane reach area
Aft thruster motor and shaft generator rotor (Port) overhaul is foreseen