As with all areas on-board a cruise vessel, outside areas have special demands on the installed lighting equipment. The required lighting solution must operate in all weather conditions. A good lighting solution will also provide a safe working environment.
Different areas on the ship require special demands for lighting
Outside areas are exposed to harsh weather conditions. This means that as well as achieving a reliable and even distribution of light output, it is also important to achieve the correct light colours, light intensity and a robust, stable light fixture for long term reliability, withstanding the rough conditions in outside passageway environments. Using the most appropriate material for the light fixture is important in order to ensure robustness and a longer operating life of the fixture.
Important factors when working with lighting solutions for passageways:
- IP class.
- Mechanical strength/impact resistance.
- No maintenance and reduced power consumption (high energy efficiency).
- Light quality.
One important demand is the IP class of the light fitting. The challenge for outdoor areas is not only to protect the light from rain and spray water, but also to ensure that the light fixture can withstand the continuous impact forces from waves in rough seas. In addition, the light fixtures must also withstand intensive cleaning using brushes, chemicals, other tools and often high-pressure cleaners.
Using the correct combination of materials in the luminaire is critical in order to ensure robustness and a long operating life. Materials are particularly important here and should be selected to withstand high shock and vibration. Especially for areas where heavy vibrations are present, Glamox recommends the use of LED light fittings. LEDs withstand shock and vibration due to the design of the diodes. No additional vibration suspension is required. A wide range of ambient temperatures is also an important requirement. Cruise vessels must be able to navigate around the world. Ideally, the light output and light quality should be consistent across all temperature bands.
No maintenance and reduced power consumption
An important requirement on-board a cruise vessel is to install luminaires that are virtually maintenance-free. This reduces or eliminates the labour costs primarily associated with the maintenance, servicing and replacement of luminaires in difficult-to-reach locations. The luminaires should consume as little energy as possible in order to reduce the size of power generators, save energy and minimise pollution. Therefore, LED lighting is recommended. LED luminaires are virtually maintenance-free, which means that cruise vessels with LED lighting will have lower operating costs compared to vessels with conventional luminaires. The initial investment of the LED installation may be higher than a traditional lighting installation, but the reduced energy consumption and lower maintenance costs of LED lighting means that this price difference will be quickly recouped and payback on the investment is recovered quickly.
In outside areas and passageways, the light output quality is important due to visual perception and to enable passengers and crew to distinguish between different colours and details. The colour-rendering index (CRI) should be above 80 to enable differentiation and to see true colours. To avoid shadowing and reduce glare (UGR), a proper light calculation should be undertaken and luminaires with homogeneous light distribution should be selected.
All lighting products for outside areas and passageways should be designed in accordance with marine standards and regulations.