The Stena Hollandica is regarded as the biggest ferry in the world because of its huge capacity to hold cargo and freight along with its big passenger carrying capacity.

In terms of gross tonnage, the title for the largest ferry ever built belongs to the MS Color Magic, operated by the Norwegian company Color Line. Delivered in 2007, this massive cruise ferry boasts a gross tonnage of 75,156 tons, surpassing its sister ship, the MS Color Fantasy (75,027 tons). The vessel measures 223.7 meters in length and can accommodate up to 2,975 passengers and 550 cars. It operates on the overnight route between Oslo, Norway, and Kiel, Germany. The Color Magic is essentially a floating luxury resort, featuring an indoor promenade, a water park, a full-scale theater, and over 1,000 cabins. While other ferries might be longer—such as the Cruise Roma, which reached 254 meters after being lengthened—the Color Magic remains the record holder for total internal volume. In the "RoPax" (roll-on/roll-off passenger) category, the Stena Hollandica and Stena Britannica are also notable giants, but they do not match the sheer volumetric scale of the Color Magic.