Seanthesy Cruises – Fost Thunder 23 

 MVHQ+WX Melivia 400 03, Agia, 400 03, Greece

Seanthesy Cruises – Fost Thunder 23 

Agia, Greece
23 feet
9

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Experience the ultimate Aegean adventure aboard Seanthesy Cruises, a fully restored 2009 Fost Thunder 23 RIB based in Agiokampos, Larissa.

Designed for speed, comfort, and exploration, this agile vessel accommodates up to 9 guests and reaches up to 35 knots with its powerful 250 HP Honda outboard engine, making it ideal for island hopping, hidden coves, and fast coastal escapes.

Onboard, enjoy a premium setup featuring a Bluetooth audio system, outside speakers, WiFi, and a spacious ice box to keep your drinks perfectly chilled throughout the day.

Your trip is led by Captain Konstantinos Spanos, an experienced local skipper specializing in island hopping, snorkeling tours, dolphin watching, sandbar stops, and fully tailored private experiences designed around your group’s preferences.

Whether you want to swim in crystal-clear waters, discover secluded beaches, or simply relax and enjoy the ride, your itinerary can be fully customized for the perfect day at sea. Optional extras such as snacks and snorkeling equipment are available to enhance your experience.

*** Please note that the accommodation, hotel, or lodging costs (for multi-day tours) are not included in the trip price. ***

Family-friendly and flexible, the boat welcomes children and pets, allows smoking and red wine onboard, and encourages swimming stops along the way.

Safety is fully covered with GPS, depth finder, VHF radio, life jackets, anchor, and wheel steering all onboard.

Book now and let Captain Konstantinos Spanos deliver an unforgettable high-speed adventure along the beautiful Greek coastline.

Experience the ultimate Aegean adventure aboard Seanthesy Cruises, a fully restored 2009 Fost Thunder 23 RIB based in Agiokampos, Larissa.

Designed for speed, comfort, and exploration, this agile vessel accommodates up to 9 guests and reaches up to 35 knots with its powerful 250 HP Honda outboard engine, making it ideal for island hopping, hidden coves, and fast coastal escapes.

Onboard, enjoy a premium setup featuring a Bluetooth audio system, outside speakers, WiFi, and a spacious ice box to keep your drinks perfectly chilled throughout the day.

Your trip is led by Captain Konstantinos Spanos, an experienced local skipper specializing in island hopping, snorkeling tours, dolphin watching, sandbar stops, and fully tailored private experiences designed around your group’s preferences.

Whether you want to swim in crystal-clear waters, discover secluded beaches, or simply relax and enjoy the ride, your itinerary can be fully customized for the perfect day at sea. Optional extras such as snacks and snorkeling equipment are available to enhance your experience.

*** Please note that the accommodation, hotel, or lodging costs (for multi-day tours) are not included in the trip price. ***

Family-friendly and flexible, the boat welcomes children and pets, allows smoking and red wine onboard, and encourages swimming stops along the way.

Safety is fully covered with GPS, depth finder, VHF radio, life jackets, anchor, and wheel steering all onboard.

Book now and let Captain Konstantinos Spanos deliver an unforgettable high-speed adventure along the beautiful Greek coastline.

Konstantinos Spanos
Captain
Konstantinos Spanos
responds within an hour

Trip availability and prices

Trip Date:
Group Size:
Select date to see availability
September 2026
SuMoTuWeThFrSa
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Number of days
1
Group Size
2 adults • 0 children
Change
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4 Hr – Sea Caves of Veneto Tour
FREE Cancellation 3 days notice
4 hour trip multiple starting times (9:30 AM, 2:00 PM)
US $160
Shared tour: 2 people
8 Hr – Damouchari & Mamma Mia Tour
FREE Cancellation 3 days notice
8 hour trip starts at 10:30 AM
US $229
Shared tour: 2 people
2 Day – Skiathos, Tsougrias & Arkos
FREE Cancellation 3 days notice
2 Day Trip starts at 7:30 AM
Overnight stay, lodging
+1
US $800
Private tour: up to 6 people
2 Day – Skiathos & Skopelos Islands
FREE Cancellation 3 days notice
2 Day Trip starts at 7:30 AM
Overnight stay, lodging
+1
US $1,143
Private tour: up to 6 people
12 Hr – Boat Tour to Chalkidiki
FREE Cancellation 3 days notice
12 hour trip starts at 7:30 AM
US $1,200
Private tour: up to 6 people
12 Hr – Skiathos Island Round Tour
FREE Cancellation 3 days notice
12 hour trip starts at 7:30 AM
+1
US $1,200
Private tour: up to 6 people
2 Day – Alonissos & Peristera Isl.
FREE Cancellation 3 days notice
2 Day Trip starts at 8:00 AM
Overnight stay, lodging
+1
US $1,200
Private tour: up to 6 people
3 Day – Sporades Grand Cruise
FREE Cancellation 3 days notice
3 Day Trip starts at 8:00 AM
Overnight stay, lodging
+1
US $1,258
Private tour: up to 6 people

Customer reviews

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FAQs about Seanthesy Cruises – Fost Thunder 23

Seanthesy Cruises – Fost Thunder 23 offers the following trips to customers:
  • €70 per person - 4 Hr – Sea Caves of Veneto Tour (4 hours)
  • €70 per person - 4 Hr – Sea Caves of Veneto Tour - 2:00 PM (4 hours)
  • €100 per person - 8 Hr – Damouchari & Mamma Mia Tour (8 hours)
  • €700 per day per group, additional €130 per person after 6 guests - 2 Day – Skiathos, Tsougrias & Arkos (2 days)
  • €1,000 per day per group, additional €130 per person after 6 guests - 2 Day – Skiathos & Skopelos Islands (2 days)
  • €1,050 per group, additional €100 per person after 6 guests - 12 Hr – Boat Tour to Chalkidiki (12 hours)
  • €1,050 per group, additional €130 per person after 6 guests - 12 Hr – Skiathos Island Round Tour (12 hours)
  • €1,050 per day per group, additional €180 per person after 6 guests - 2 Day – Alonissos & Peristera Isl. (2 days)
  • €1,100 per day per group, additional €180 per person after 6 guests - 3 Day – Sporades Grand Cruise (3 days)
When you book a trip with Seanthesy Cruises – Fost Thunder 23, you can expect the following amenities onboard:
  • GPS
  • VHF Radio
  • Depth Finder
  • Anchor
  • Wheel Steering
  • Life Jackets
  • Bimini
  • Shower
  • WiFi
  • Audio System
  • Outside Speakers
  • Ice Box
Trips booked with Seanthesy Cruises – Fost Thunder 23 include:
  • Snorkeling Equipment
  • Snacks
Seanthesy Cruises – Fost Thunder 23 offers the following activities:
  • Boat & Yacht Tours
  • Island Hopping
  • Snorkeling & Diving Tours
  • Whale & Dolphin Watching
  • Eco-Tours
  • Sandbar Tours

Your operator

Konstantinos Spanos
Konstantinos Spanos
Konstantinos Spanos

Agia, Greece

Member since April 2026

Driven by a lifelong passion for the Aegean Sea, I officially began my career as a boat operator in 2022, founding Seanthesy Cruises. My mission is to share the hidden treasures of my homeland, from the mythical sea caves of Pelion to the turquoise waters of the Sporades, with travelers from around the world. What drives me is the desire to provide more than just a boat ride; I strive to create immersive, high-end expeditions that combine local history, mythology, and the thrill of discovery. Every trip is an opportunity to offer my guests a safe, premium, and authentic experience, ensuring they see Greece through the eyes of a local who truly loves the sea.

Member since April 2026

Driven by a lifelong passion for the Aegean Sea, I officially began my career as a boat operator in 2022, founding Seanthesy Cruises. My mission is to share the hidden treasures of my homeland, from the mythical sea caves of Pelion to the turquoise waters of the Sporades, with travelers from around the world. What drives me is the desire to provide more than just a boat ride; I strive to create immersive, high-end expeditions that combine local history, mythology, and the thrill of discovery. Every trip is an opportunity to offer my guests a safe, premium, and authentic experience, ensuring they see Greece through the eyes of a local who truly loves the sea.

What the boat is like

Boat category
Skiffs and flats boats
Boat type
Inflatable outboard
Boat manufacturer
Fost
Boat Model
Thunder 23
Year built
2009
Restored in
2024
Boat length
23 ft
Capacity
9 persons
Engine model
Honda
Max crusing speed
35 knots
Powered by
1 x 250HP
Engine Type
Outboard
Fuel Type
Gas
Boat category
Skiffs and flats boats
Boat type
Inflatable outboard
Boat manufacturer
Fost
Boat Model
Thunder 23
Year built
2009
Restored in
2024
Boat length
23 ft
Capacity
9 persons

Which kind of activities are offered

Boat & Yacht Tours
Island Hopping
Snorkeling & Diving Tours
Whale & Dolphin Watching
Eco-Tours
Sandbar Tours

Which amenities are available onboard

GPS
VHF Radio
Depth Finder
Anchor
Wheel Steering
Life Jackets
Bimini
Shower
WiFi
Audio System
Outside Speakers
Ice Box

What's included in the trip price

Snorkeling Equipment
Snacks

What’s allowed on the boat

Child Friendly
Smoking
Shoes
Pets
Swimming
Red Wine

What additional terms you should be aware of

Security deposit is not required

A refundable deposit is not required by the charter operator.


Fuel is included

Fuel is included in the price of the rental.

How cancellations work

Free cancellation up to 3 days prior to trip

You can cancel or modify your booking up to 3 days before the trip date, free of charge. If you cancel or modify your booking later, or fail to show up, you'll forfeit 100% of what you've paid.

More details

How you can pay

Reserve with a 20% booking deposit, pay the captain the rest

When the captain confirms your trip, BoatBooker charges your credit card a 20% booking deposit to guarantee your reservation.

The remaining balance is to be paid directly to the charter operator on or prior to your trip date in one of the following payment methods:

 Cash

 Visa

 Mastercard

 Bank transfer

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