Helena Frye
Cruise ships are huge vessels that can carry thousands of passengers. Despite their size, cruise ships don't go very far underwater, with only around 30 feet (9.1 metres) of the ship sitting below the waterline. This is known as the draft, and it determines which ports a cruise ship can enter. The draft of a cruise ship depends on the size of the vessel and how much fuel and ballast water is on board. While some cruise ships have rooms below the waterline, these are typically for staff accommodation, air conditioning units, the engine room, and laundry.
| Characteristics | Values |
|---|---|
| How far underwater does a cruise boat go? | Only around 30 feet (9.1 metres) of a cruise ship sits underwater, which is about 10% of the ship's overall height. |
| Draft of a typical large cruise ship | 8.5 to 8.8 metres (28 feet) |
| Draft of the largest cruise ships | 9.3 metres (30 feet 7 inches) |
| Draft of a smaller cruise ship | Less than 7 metres (22 feet 9 inches) |
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What You'll Learn
- Cruise ships only go around 30 feet underwater, which is about 10% of their overall height
- The depth of a ship underwater is known as the draft
- The draft of a cruise ship depends on the size of the vessel and how much fuel and ballast water is on board
- The largest cruise ships in the world, Royal Caribbean's Oasis-class ships, have a draft of 30 feet and 7 inches
- Some cruise ships have cabins that are half underwater
Cruise ships only go around 30 feet underwater, which is about 10% of their overall height
Cruise ships don't actually go that far below sea level, with only around 30 feet (or 9.1 metres) of the ship sitting under water. This is about 10% of the ship's overall height. The depth at which a ship sits in the water is known as the draft, and this will determine which ports a cruise ship can enter. A typical cruise ship draft is 8.5m (25ft 6in) to 8.8m (28ft), but they can range from 5m (16ft 5in) to 10m (32ft 10in). The largest cruise ships in the world, Royal Caribbean's Oasis-class ships, have a draft of 9.3m (30ft 7in).
While cruise ships don't go very far underwater, some rooms can be below the water level. This can be a scary thought for some passengers, who imagine looking out of a window to see a large, shadowy creature swimming past.
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The depth of a ship underwater is known as the draft
Cruise ships will generally have one or two decks underwater. These decks are typically used for staff accommodation, air conditioning units, the engine room, laundry, and even a jail. While it may be unnerving to imagine, some cruise ships do have cabins that are partially underwater, with windows looking out into the water.
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The draft of a cruise ship depends on the size of the vessel and how much fuel and ballast water is on board
The draft of a cruise ship, or how far it goes underwater, depends on the size of the vessel and how much fuel and ballast water is on board. Most cruise ships have a draft of between 5 metres (16 ft 5 in) and 10 metres (32 ft 10 in). The draft of a typical large cruise ship is between 8.5 metres (25 ft 6 in) and 8.8 metres (28 ft), while the largest cruise ships in the world, Royal Caribbean's Oasis-class ships, have a draft of 9.3 metres (30 ft 7 in). Smaller cruise ships typically have a draft of less than 7 metres (22 ft 9 in), allowing them to enter smaller ports. Despite their size, cruise ships don't go very far below sea level, with only around 30 feet (9.1 metres) of the ship sitting underwater, which is about 10% of the ship's overall height.
The draft of a cruise ship is important in determining which ports it can enter. It is measured forward, aft, and midship. The depth of a ship underwater can be a source of fascination or fear for some people. For example, the Seawise Giant, the biggest ship ever built, had a draft of 84 feet, which was so deep that it couldn't go through the Suez Canal. Some people find the idea of cruise ship rooms with underwater windows terrifying, while others find it intriguing.
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The largest cruise ships in the world, Royal Caribbean's Oasis-class ships, have a draft of 30 feet and 7 inches
The largest cruise ships in the world are Royal Caribbean's Oasis-class ships. These ships have a draft of 9.3m (30ft 7in), which means that only around 30 feet (or 9.1 metres) of the ship sits underwater. This is only about 10% of the ship's overall height. The draft of a ship is the distance between the waterline and the bottom of the ship. It determines which ports a cruise ship can enter. Smaller cruise ships typically have a draft of less than 7m (22ft 9in) and so they can enter smaller ports. The Oasis-class ships are so large that they require special features to pass under bridges. For example, the Oasis of the Seas has telescoping funnels that can be retracted to pass under the Great Belt Fixed Link in Denmark.
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Some cruise ships have cabins that are half underwater
Cruise ships don't actually go that far below sea level, with only around 30 feet (or 9.1 metres) of the ship sitting under water. This is only about 10% of the ship's overall height. The depth at which a ship sits in the water is known as the draft. Most cruise ships typically have a draft of between 5 metres (16ft 5in) and 10 metres (32ft 10in). The actual draft depends on the size of the vessel and how much fuel and ballast water is on board. A typical cruise ship draft is 8.5m (25ft 6in). Draft is measured forward, aft and midship. The draft will determine which ports a cruise ship can enter. Smaller cruise ships typically have a draft of less than 7m (22ft 9in) and so they can enter smaller ports. The largest cruise ships in the world, Royal Caribbean's Oasis-class ships, have a draft of 9.3m (30ft 7in).
While the idea of underwater cabins may seem like a modern innovation, it's important to note that cruise ships have had underwater decks for a while. These decks are typically used for things like staff accommodation, air conditioning units, the engine room, laundry, and even a jail! So, while the concept of underwater cabins may be new, cruise ships have long utilised the space below the waterline.
The benefits of underwater cabins are numerous. For one, it offers passengers a unique and immersive experience. They can feel more connected to the ocean and the surrounding environment. Additionally, underwater cabins can provide a more stable and comfortable ride. By being lower in the water, these cabins are less affected by the motion of the ship, reducing the chances of motion sickness. This can be especially appealing to those who are prone to seasickness.
While the idea of half-submerged cabins may seem intriguing, it's important to consider the potential challenges and limitations. One of the main concerns is ensuring adequate lighting and ventilation in these cabins. With only half the windows above the waterline, natural light and fresh air could be limited. Additionally, the design and construction of these cabins would need to be carefully executed to ensure watertight integrity and maintain the structural integrity of the ship.
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Frequently asked questions
Cruise ships don't go very far underwater, with only around 30 feet (9.1 metres) of the ship sitting under water. That's about 10% of the ship's overall height.
The draft is the depth at which a ship sits in the water. Most cruise ships have a draft of between 5 metres (16ft 5in) and 10 metres (32ft 10in). The actual draft depends on the size of the vessel and how much fuel and ballast water is on board.
A typical large cruise ship has a draft of 8.5 to 8.8 metres (about 28 feet).
The largest cruise ships in the world are Royal Caribbean's Oasis-class ships, which have a draft of 9.3m (30ft 7in).
Cruise ships will generally have one or two decks underwater, but these are typically used for staff accommodation, air conditioning units, the engine room, laundry, and a jail.
