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Aquabus offers an hourly waterbus service between Cardiff Castle grounds in the city centre and Mermaid Quay in the Bay.

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Our Aquabus service links the City Centre to the Bay.


  • Full wheelchair, pushchair and bicycle access
  • Easy access – No steps
  • Comfortable modern bus seats
  • Very stable and safe construction – aluminum catamaran hull with a total of 8 watertight compartments
  • Modern boats, saving the environment


From the City – Castle Grounds to Mermaid Quay (on the hour)
10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00
From the Bay – Mermaid Quay to Castle Grounds (half past the hour)
10:30 | 11:30 | 12:30 | 13:30 | 14:30 | 15:30 | 16:30

Request stops available:

  • Taff’s Mead Embankment (for Central Station)

Call the boat on 07500 556 556

​Prices, Booking and tickets:

Adults – £7.50 | Children under 15 – £3.50
3’s and under go free!
No charge for bicycles or pushchairs

Each way takes 25 minutes or 1 hour if you choose to stay on board for a relaxing 1 hour long, river cruise, back to where you boarded the boat.

See the sights

  • The Wales Millennium Center
  • The Pierhead Building
  • St Davids Hotel
  • The wetlands nature reserve
  • River Taff
  • Principality Stadium
  • Bute Park & Cardiff Castle

We reserve the right to alter services and prices without prior notice.

Board our specially designed, wheelchair friendly Hydro 1 at the Aquabus stop ‘Castle Grounds’ on the river Taff to the west of the Castle. We sail to the Bay on the hour daily between 10am and 5pm weather permitting. It’s rare that a sailing is cancelled, even if the weather forecast looks bleak its often better in the micro-climate of the Cardiff Bay area. Enjoy an excellent trip with unique views of Cardiff the Principality Stadium from the River Taff, and the vistas across the Bay which proves time and again to be an impressive backdrop.

Easy access for all
Please note payment for this service is by card or cash paid on board the boat, but the only way to guarantee your place is by booking online.

Departs from Bute Park adjacent to Cardiff Castle Postcode: CF10 3RB
W3W: tree.words.emerge or Departs from Mermaid Quay adjacent to Cadwaladers Ice Cream parlour.

Journey Time: 25-30 minutes

  • Please arrive 10 minutes before departure time
  • On a busy day please make yourself known to the crew to ensure you board ahead of those arriving without a booking.
  • Times cannot be changed or refunded within 48 hours.
  • Tickets purchased online are for the boat Hydro and not any other service.