Page 324 - Practical Ship Design

282 Chapter 9

- fuel oil,
- lubricating oil,
- compressed air,
- steam,
- condensate and boiler feed,
- bilge and ballast,
- general service,
- fire fighting,
- together with the associated valves, fittings, lagging, etc.

(v) Engine room structure and fittings:
- uptakes, silencers and funnel,
- downtakes, where fitted,
- floorplates, gratings, ladders,
- ventilation fans and trunking,
- workshop and storeroom fittings,
- engine room fire extinguishing systems and equipment,
- engine room painting and insulation,
- lifting gear,
- spare gear and tools.

(vi) Engine room controls:
- instrumentation and alarms.
It is suggested that a standard grouping of this sort should be used for all detailed
machinery weight and centre of gravity estimates and it may be remarked that a
very similar grouping appears in Chapter 17 as specification headings, whilst a
simplified version is suggested in Chapter 18 as a basis for cost estimation.
A naval architect cannot be expected to know about all these items in any detail,
but he should aim to know enough to be able to discuss any problems that may arise
in relation to their arrangement and operation in a ship.

9.6.2 Items specified by the naval architect

In addition to the above list there are a number of items which are generally the
responsibility of the naval architect to specify and arrange, but which are very
often fitted in the engine room. These consist of items such as:
- cargo and stores refrigeration machinery,
- air conditioning refrigeration machinery,
- sewage plant,
- fin stabilisers,
- stern thrusters.