It takes a lot of energy to move a ship through water. Transporting cruise ships actually demands more energy than anything else onboard. Improving the way our ships move through the water is a critical element and the primary focus in our quest for energy efficiency and sustainability.
Royal Caribbean Cruises Ltd. takes pride in being a leader in the use of new technologies to build and design ships that are more energy efficient.
Air bubbles created at the front of the ship’s hull reduces resistance or drag as it moves across the ocean.
In 2013, we tested a built-in air lubrication system on Celebrity Reflection, and debuted the new technology on Royal Caribbean International’s Quantum of the Seas in 2014.
We are constantly upgrading the hull designs of our ships to help them perform more efficiently. Royal Caribbean International’s Quantum of the Seas’ hull, one of the most efficient ever built, was designed to reduce drag as the ship moves through the water and to limit non-indigenous marine species’ ability to attach to it and be transferred to other ecosystems as the ship moves from port to port. A new hull design and new coatings were also introduced on Celebrity Solstice-class ships.
The light bulbs on many of our ships have been replaced by LED and fluorescent lighting, which saves energy by producing the same amount of light per bulb using less wattage and producing less heat that would require more energy to be cooled.
We have installed high-efficiency appliances throughout our ships and evaluate them regularly to ensure they are performing in a way that minimizes their impact on climate change. For example, our newest icemakers use 65 percent less water than the previous machines.
Our entire fleet of ships has window tinting designed for the marine environment. This allows natural light to enter the ship, but reduces both the amount of solar heat that comes through and the amount of air conditioning needed to cool. Tinted windows on our ships also protect our interiors and furnishings from sun damage, thereby reducing waste.
Heating, Ventilation and Air Conditioning
Our ships are equipped with the latest and most efficient air-conditioning equipment available. Crewmembers also diligently help reduce air-conditioning energy waste by keeping thermostats in a neutral position when staterooms are not in use, and by ensuring balcony doors are closed. Quantum of the Seas introduced a new stateroom key card system that requires all guests to be present in their rooms for the lights and air conditioning to be activated.