Founder & Managing Director
Ruben Castellano-Wirawan was raised between two worlds that share one thing in common: the sea. His father, a Spanish marine engineer, and his Flores-native mother shaped a childhood split between Makassar and Labuan Bajo — a childhood where Flores Sea tides were practical knowledge long before driving was. By the time Ruben was old enough to take the wheel of a car, he already understood how the surface texture at the mouth of Labuan Bajo harbour changes with the phase of the tide, and what that means for a vessel’s departure window. That kind of knowledge does not come from charts alone.
Expertise and Experience
Before founding Komodo Liveaboard Cruises in 2015, Ruben spent ten years managing private charter operations across the Indonesian archipelago — routes from the Banda Sea to the Komodo corridor, handling the logistics of vessels, crews, and guests who expected the sea to cooperate with their schedule. It rarely does, and that decade taught him how to build itineraries that bend around real conditions rather than around what looks clean on a brochure page. His operating rule has not changed since founding: every departure is planned around current state-of-sea data, not a fixed template carried forward from last season. Since 2015, that approach has held across more than 10,000 guest voyages.
What He Manages for Guests
Ruben’s role is the final check on every cruise plan the team puts forward. When a guest briefs him on what they want — a honeymoon voyage mixing Manta Point dives with a sunrise hike on Padar, a private charter for eight with a specific dietary brief, a first-time family trip that needs a gentler current profile — his job is to match the vessel, sequence the anchorages correctly, and clear every operational assumption before a single booking is confirmed. The 10,000+ guests figure is not a marketing number; it is the volume of individual itineraries that have gone through that review process and returned without incident. He also co-ordinates directly with Nia Suharto, the team’s Head of Cruise Operations, on port clearances and departure logistics, so that what he approves on paper translates accurately to what happens at the dock.
A Personal Connection to Komodo
Ask Ruben what separates a good itinerary from a true one and he will probably describe Batu Bolong at first light. The moment his vessel rounds the headland into that anchorage, before the anchor is even down, the current coming off the wall is already reading on the surface — a visible pressure line where the water thickens and accelerates. Most guests are still in their cabins. Ruben is on deck reading it. That surface read, learned over twenty years of watching the same stretch of water in different seasons and moon phases, is what tells him whether the slack-tide window will hold for the dive he planned or whether the schedule needs fifteen minutes of adjustment. That is the difference between an itinerary written from a desk and one written by someone who has spent two decades standing at that anchorage in the early morning.
Plan Your Trip with Ruben’s Team
If you are working out what kind of Komodo liveaboard voyage fits your group — how many nights, which sites, which vessel category — the most direct step is a conversation. Ruben’s team is available on WhatsApp at wa.me/628113823875. Share your dates, group size, and what you are hoping to see, and we will put together a matched recommendation. No obligation, no standard pitch — just a practical starting point based on your specific brief.