Clear Boat Experience: Transparent Boat Tour from Sesimbra
A new way to see and feel the ocean along the Setubal coastline.
The transparent boat tour Sesimbra is a pioneering experience in Portugal, putting you aboard the country's first fully see-through hull vessel to explore a rugged, protected coastline. This 90-minute journey from Sesimbra Harbour traces the cliffs and coves of the Arrabida Natural Park, revealing the underwater world beneath you as you sail.
Departing from the sheltered harbour of Sesimbra, the route passes some of the most celebrated hidden beaches on the Portuguese Atlantic coast, including Praia do Ouro and the dramatic Praia do Ribeiro do Cavalo. These beaches are largely inaccessible by land, making the boat the only practical way to reach them.
Small group sizes are central to the concept, keeping the experience quiet, comfortable, and genuinely connected to the natural surroundings. There is time during the trip to swim in clear Atlantic waters and to observe marine life through the transparent hull at close range.
The Arrabida coastline is protected within a natural park and marine reserve, meaning the water quality here is among the highest on the Iberian Peninsula. The combination of transparent hull technology and this exceptional setting makes this tour unlike anything else currently available in Portugal.
Tour Highlights
Sail aboard Portugal's first fully transparent hull boat, offering a direct view of the seabed beneath you.
Explore the coastline of Arrabida Natural Park, one of the most protected and scenic marine environments in Portugal.
Discover Praia do Ribeiro do Cavalo and Praia do Ouro, secluded beaches largely unreachable except by sea.
Swim in clear Atlantic waters during a stop along the route, surrounded by natural cliffs and calm coves.
Observe marine life through the transparent hull in real time, without snorkelling equipment or underwater cameras.
Travel in small, exclusive groups to ensure comfort, safety, and a more personal connection with the environment.
How the Experience Unfolds
The tour begins at Sesimbra's historic fishing harbour. After a brief welcome and safety introduction, the group boards the ClearBoat and sets off along the coastline heading west.
The boat follows the dramatic limestone cliffs of Arrabida, passing sea caves and rock formations. The transparent hull provides continuous views of the seabed as depth and colour change beneath you.
The route passes Praia do Ouro, a golden-sand beach tucked between cliff faces. This secluded spot is one of the gems of the Setubal coastline and is best appreciated from the water.
Considered one of Portugal's most beautiful hidden beaches, Praia do Ribeiro do Cavalo is accessible only by sea or a demanding trail. The boat anchors nearby for swimming and relaxation.
After the swimming stop, the boat makes its way back along the coast to Sesimbra Harbour, completing the 90-minute circuit with views of the village and its hilltop castle.
What Is Included
Included
- 90-minute guided coastal boat tour
- Use of the transparent hull ClearBoat vessel
- Safety briefing and equipment
- Swimming stop at a secluded beach
- Small group experience
Not Included
- Hotel transfers or transport to Sesimbra
- Food and beverages
- Snorkelling equipment
- Travel insurance
Important Information
Reserve Your Place on the ClearBoat
Spaces are limited by design. Book in advance to secure your spot on Portugal's first transparent boat coastal tour from Sesimbra.
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