In most situations, the crew in a control room works without natural daylight and so light quality is very important.
Different areas on a ship require special demands for lighting
Just like all areas on-board a cruise vessel, the control room has particular requirements on the installed lighting equipment. Limited space demands lighting solutions that are compact with low design heights, as the typical ceiling height in a control room is only 2.1m.
Important factors when working with lighting solutions for control rooms:
- Light quality (colour rendering; task lights to illuminate working areas) and glare (Unified Glare Ratio).
- Emergency systems (in case of power failure/black-outs).
- No maintenance and reduced power consumption.
- EMC interference.Mechanical design/impact resistance.
In a control room, the light output quality is critical due to visual perception and the ability to distinguish between different colours and details. The colour-rendering index (CRI) should be above 80 in order for the crew to differentiate and see true colours. To avoid shadowing and reduce glare (UGR, unified glare ratio) a proper light calculation should be carried out and luminaires with homogeneous light distribution should be selected. The colour temperature preferred in a control room should be equal to or higher than 4000 Kelvin in order to improve safety, maximise efficiency and to provide good, comfortable working conditions.
Lights with adjustable dimming capabilities should be provided for PC visual displays and monitors. Dimming is critical in order to simulate day and night.
Centralised (one battery bank /generator for all lighting) and decentralised (built-in battery) systems should be provided for lighting. UPS (uninterruptible power supply) systems may also be required for critical lighting, emergency lighting and exit signs.
No maintenance and reduced power consumption
Easy installation and various mounting options ensure flexibility, time savings and improved safety for crew members, primarily because some lights may be located in areas that are difficult to reach or access. The luminaires should consume as little energy as possible in order to reduce the size of power generators, to save energy and to reduce pollution/emissions. The efficiency and operating life of LEDs continues to improve, and LED luminaires are virtually maintenance-free. This means that cruise vessels with LED lighting will have lower operating costs compared to vessels with conventional luminaires. In addition, the reduced power consumption of LED lighting onboard has a positive impact on the cruise vessel’s Air Conditioning system, as less heat is emitted from the lighting, which means less AC power is needed and fuel consumption is reduced. The initial investment in an LED installation may well be higher than that of a traditional lighting installation, but the lower energy consumption and maintenance costs of LED lighting means that this price difference is quickly recouped and payback on the initial investment is recovered quickly.
EMC is becoming increasingly important in all industries and applications. The increased use of electronic components in modern ship designs, particularly in the control room, requires more stringent control of the EMC requirements. EMC 1 protection, both conducted and radiated, must be guaranteed on all light fittings installed in the control room. This is covered by the international standard IEC65/6500. Mechanical design Using the correct combination of materials in luminaires is important, to ensure robustness and a long operating life. The use of aluminium is critical for LED lighting products to ensure sufficient cooling for continuous operation, low maintenance and increased operating life. Lighting that is easy to install and that offers various mounting options, ensures flexibility and time savings. Low build heights and a compact design of the luminaires will enable mounting even in areas where space may be limited.
We always recommend the use of a marine-approved lighting product in a control room.