Swimming Pools

These days cruise vessels are a lot more than just family pools and spas. Passengers find straight up water parks and swimming pools that will bring out the kid in everyone again. As with all areas onboard a cruise vessel, pools have special demands on the installed lighting equipment. The required lighting solution must operate in all weather conditions.

Different areas on the ship require special demands for lighting
The lighting design should integrate the pool into the outdoor design and set the right scene in hours of darkness. 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 pool areas. 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 pools:

- IP class.
- Mechanical strength/impact resistance.
- No maintenance and reduced power consumption (high energy efficiency).
- Light quality
 
IP class
The challenge for pools is to have pressure-tight underwater luminaires and outside light fittings with a high IP-rating because they must also survive intensive cleaning, using brushes, chemicals, other tools and often high-pressure cleaners.
 
Mechanical strength
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, the use of LED fittings is recommended. 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 are 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 onboard 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. 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 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.

Light quality
In swimming pools, the light output quality is important due to visual perception and to enable the passengers 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 swimming pools should be designed in accordance with marine standards and regulations.