Typical Cruise Ship Speeds

Most cruise ships travel between 19 and 22 miles per hour when crossing open ocean. This is called cruising speed, and it is the pace the ship maintains for the bulk of a voyage. The exact speed depends on the ship's size, engine power, and the route — a newer ship built for speed may cruise at 22 mph, while an older or larger vessel might settle at 19 mph.

Cruise ships can go faster than their cruising speed. Many ships are capable of reaching 25 to 30 mph in short bursts, but they rarely do so on regular sailings. Running at top speed burns fuel rapidly and adds cost to every voyage. Instead, cruise lines set a cruising speed that balances fuel efficiency with keeping the ship on schedule.

The difference between 19 and 22 mph may sound small, but it matters over a week at sea. A ship cruising at 19 mph covers roughly 3,200 nautical miles in seven days. The same ship at 22 mph covers about 3,700 nautical miles. That extra speed can mean the difference between a seven-day itinerary and an eight-day one, which affects how many voyages a ship can complete in a year.

Key Takeaways

  • Cruise ships typically cruise at 19 to 22 miles per hour, which is much slower than their maximum speed.
  • Cruising speed is set by the cruise line to balance fuel costs with schedule reliability.
  • Larger ships and older vessels often cruise at the lower end of the range, while newer ships may cruise faster.
  • A ship's speed affects how many ports it can visit and how many voyages it can complete in a year.
  • Weather, currents, and port congestion can cause a ship to arrive earlier or later than scheduled, regardless of cruising speed.

Why Ships Do Not Travel at Top Speed

Fuel consumption increases dramatically at higher speeds. A cruise ship running at top speed (25 to 30 mph) uses roughly twice as much fuel as one cruising at 19 mph. Since a large ship burns thousands of gallons of fuel per day, the difference between cruising speed and top speed can cost tens of thousands of dollars per voyage.

Cruise lines build the cost of fuel into ticket prices. If a ship burned fuel at top speed for every voyage, ticket prices would rise significantly. By cruising at a moderate speed, the line keeps fuel costs predictable and keeps fares competitive. The ship still arrives on schedule because the itinerary is planned around that cruising speed from the start.

How Ship Size Affects Speed

Larger ships tend to cruise at the lower end of the speed range. A mega-ship carrying 5,000 or more passengers may cruise at 19 to 20 mph, while a smaller ship with 2,000 passengers might cruise at 21 to 22 mph. The larger the vessel, the more power it takes to move it through the water, and the more fuel is burned at any given speed.

Newer ships are often designed to cruise faster than older ones of similar size. Modern engines and hull designs are more efficient, allowing a newer ship to reach the same speed while burning less fuel. This is one reason cruise lines periodically retire older ships — the fuel savings from a newer vessel can pay for the new ship over time.

Speed During Port Approaches and Departures

Ships slow down significantly when entering or leaving a port. A ship approaching a harbor may reduce speed to 5 to 10 mph to allow pilots and tugboats to guide it safely to the dock. This slow speed gives the crew time to maneuver the massive vessel in tight spaces and prevents damage to the ship and port infrastructure.

The time spent at reduced speed is built into the ship's schedule. If a port is 50 miles away and the ship is cruising at 20 mph, the captain knows it will take roughly 2.5 hours to arrive. The last 30 minutes of that approach will be at much slower speeds, but the overall arrival time remains predictable because the itinerary accounts for it.

How Weather and Currents Change Actual Speed

A ship's ground speed — the actual speed it moves across the ocean relative to the seafloor — is different from its cruising speed through the water. A strong current can push a ship faster or slower than its engine speed alone would suggest. A ship cruising at 20 mph with a 2 mph current behind it effectively moves at 22 mph over the ground.

Headwinds and rough seas can slow a ship down. In severe weather, a captain may reduce cruising speed to 15 mph or lower to keep passengers comfortable and protect the ship. This is why voyages in stormy seasons (like the Atlantic in winter) sometimes arrive later than scheduled, even though the ship left on time and maintained its planned cruising speed.

Comparing Cruise Ships to Other Vessels

Cruise ships are much slower than cargo ships or container vessels, which often cruise at 20 to 25 mph. However, cargo ships prioritize speed and efficiency over passenger comfort, so they can tolerate more vibration and motion. Cruise ships sacrifice some speed for a smoother ride and more stable platform for dining and entertainment.

Ferries and smaller passenger vessels may cruise at 20 to 30 mph depending on their design and route. A high-speed ferry designed for short crossings might cruise at 30 mph or faster, while a traditional ferry on a longer route may cruise at 15 to 20 mph. The difference reflects the trade-off between speed, fuel cost, and passenger comfort on each type of vessel.

How Cruising Speed Affects Your Itinerary

The ship's cruising speed determines which ports it can visit and how long it stays in each one. A seven-day Caribbean cruise from Miami might visit three ports and spend one day at sea between each stop. The ship's 20 mph cruising speed means it can cover the distance between ports in roughly one day, leaving time for a full day in port.

If the same ship cruised at 15 mph, it would need more time to reach distant ports, which would either reduce the number of ports visited or require an eight-day voyage instead of seven. Conversely, a faster cruising speed allows the ship to visit more ports or spend more time in each one. This is why cruise lines carefully choose their cruising speed based on the itineraries they want to offer.

Frequently Asked Questions

Why do cruise ships go so slowly compared to airplanes?

Cruise ships prioritize fuel efficiency and passenger comfort over speed. An airplane burns fuel at a rate that makes speed economical; a cruise ship burns so much fuel that going faster would make tickets unaffordable. Ships also need to maintain a stable platform for dining, entertainment, and sleep, which is easier at moderate speeds.

Can I find out how fast my ship is going right now?

Many cruise ships display the current speed on the in-cabin television system or on a bridge camera feed that passengers can watch. Some ships post speed updates on the daily program or the ship's app. If your ship does not display this information, the crew can tell you the current speed if you ask at the information desk.

Do cruise ships ever go faster to make up for delays?

Ships rarely increase speed to recover lost time because the fuel cost is too high. Instead, a captain may reduce time in port or skip a planned stop if the ship falls behind schedule. In rare cases, a ship may increase speed slightly, but this is uncommon and usually only happens if the delay was caused by something other than weather.

What is the difference between knots and miles per hour?

A knot is one nautical mile per hour, and a nautical mile is about 1.15 regular miles. When cruise lines advertise speeds, they usually use miles per hour for passengers. The ship's crew uses knots, so a cruising speed of 20 mph is roughly 17 knots. Both measurements describe the same speed, just in different units.

Do all cruise ships on the same line travel at the same speed?

No. Older ships and newer ships on the same cruise line may have different cruising speeds based on their engines and design. A ship built in 2010 might cruise at 19 mph, while a newer ship built in 2020 might cruise at 22 mph. The cruise line adjusts itineraries for each ship to account for these differences.