The Hoku Nui — Sea Paradise's 50-Foot Sailing Catamaran
The Hoku Nui — Hawaiian for “Big Star” — is Sea Paradise Hawaii’s 50-foot luxury sailing catamaran and the vessel aboard which every Sea Paradise tour has departed Keauhou Bay for decades. Certified to carry 65 passengers, Sea Paradise deliberately caps all departures at 49 guests — prioritizing space, comfort, and experience over maximum capacity. The Hoku Nui’s twin-hull catamaran design, full onboard facilities, and experienced USCG-licensed crew make it the most capable and comfortable tour vessel operating on the Kona Coast.
Why We Cap at 49 on a Vessel Certified for 65
Most tour operators fill their vessels to maximum certified capacity. Sea Paradise does not. The Hoku Nui is certified to carry 65 passengers. Every Sea Paradise departure is capped at 49 guests — 16 fewer than the vessel can legally carry. That gap is a deliberate business decision, made in favor of the guest experience over maximum revenue per departure.
The difference is tangible. Forty-nine guests on a 50-foot catamaran means generous deck space for every person — room to spread out during the sail, easy access to the entry ladder, comfortable positioning for gear-up before the snorkel, and enough space that the experience never feels crowded. It also means less physical stress on the vessel over time, longer equipment life, and more attentive crew-to-guest ratios. It is the same decision Sea Paradise has made for 40 years: prioritize the experience over the occupancy rate.
The crew were professional, kind, knowledgeable and fun.
Extremely clean, with luxury bathroom facilities.
Lots of refreshments and snacks, also a freshwater shower to wash off as you get out of the sea.
One thing I did notice that Sea Paradise was doing that other boats around us weren’t doing. Sea Paradise puts crew members on paddle boards as lifeguards in the areas that you are swimming. That’s a big plus for safe in my eyes and I appreciate that.
Thank you again for the great time and great memories.
Why a Catamaran Makes the Difference
The Hoku Nui’s twin-hull catamaran design is not incidental — it is one of the most significant factors in the quality of the Sea Paradise experience, and a direct advantage over the single-hull and rigid-hull vessels operated by other Kona tour companies.
Stability
The twin-hull design creates a wide, stable base that dramatically reduces the rolling and rocking motion responsible for sea sickness. Guests who are typically sensitive to boat motion consistently report a comfortable experience aboard the Hoku Nui. No single-hull or rigid-hull vessel of similar length matches this stability.
Deck space
The wide beam creates far more usable deck area than a monohull of equivalent length. Guests can move freely, gear up without crowding, and find comfortable spots throughout the voyage. On the snorkel tours, this space is genuinely valuable — guests are not bumping into each other while pulling on fins.
Water access
The Hoku Nui’s wide swim step and hand railings provide easy, safe entry and exit from the water at any skill level. Getting in and out is straightforward for first-time snorkelers, children, and older guests alike.
Sailing
The Hoku Nui actually sails. When conditions allow, the crew raises sail on the passage to Kealakekua Bay or Manta Village — providing a quieter, smoother, more scenic experience than motor-only vessels. The sound of the wind in the sails and the absence of engine noise on a morning passage to Kealakekua Bay is one of the most quietly memorable parts of the Sea Paradise experience.
Facilities
Two onboard restrooms, a full galley, a bar serving beer, cocktails, and mixed drinks, and a freshwater rinse station on deck are standard on the Hoku Nui. Small rigid-hull vessels cannot offer any of these amenities.
The Hoku Nui Crew
Every captain aboard the Hoku Nui has earned their position from the bottom up. Sea Paradise captains — including the manta tour captains, Captain Adrian, Captain RO, and Captain Eddie — began their careers as deckhands on the Kona Coast, working through every role on the vessel before progressing to the helm. All hold USCG licenses. Many have experience on other Kona tour operations before joining Sea Paradise.
In a small maritime community like Kona, that experience is transparent and verifiable. Captains know the currents, the reefs, the manta behavior, and the daily ocean conditions at a level that only comes from years of time on the water. The crew also includes marine naturalists who lead reef and manta briefings on every tour — combining safety and science with the Hawaiian tradition of “talk story.”
Environmental Standards
The Hoku Nui and all Sea Paradise operations are certified by the Hawaii Ecotourism Association and meet the standards of the Coral Reef Alliance’s West Hawaii Voluntary Standards for Marine Tourism. Specific practices include:
- Reef-safe sunscreen required on all tours — Sea Paradise provides it onboard
- Environmentally certified, non-toxic cleaning products used for all gear and vessel cleaning
- Compostable food service products sourced from local vendors
- Recycling program in place for all vessel waste
- Dolphin SMART participant — crew follows responsible dolphin viewing protocols
- NOAA guidelines followed for all marine wildlife interactions
- Manta Ray Tour Operator Guidelines adhered to on all manta tours
Hoku Nui FAQ
Hoku Nui translates from Hawaiian as “Big Star.” The name reflects both the catamaran’s size and its role as the centerpiece of the Sea Paradise experience. The Hoku Nui replaced earlier Sea Paradise vessels and has been the company’s primary tour vessel for its current chapter of operations.
The Hoku Nui is certified by the U.S. Coast Guard to carry 65 passengers. Sea Paradise deliberately caps all departures at 49 guests — 16 below the certified maximum — to ensure every guest has generous deck space, easy water access, and a comfortable experience throughout the tour. This is a consistent, long-standing Sea Paradise policy across all tour types.
No. The Hoku Nui is not wheelchair or walker accessible. Boarding requires stepping between the dock and the vessel, and navigating the catamaran deck involves steps and varied surfaces. Guests with mobility limitations who are not able to safely board and move around the vessel should contact Sea Paradise before booking at (808) 322-2500 to discuss whether the experience is suitable for their needs.
Yes. The Hoku Nui has two onboard restrooms (referred to as “heads” in nautical terminology), a galley, a full bar, shaded seating under a bimini top, and a freshwater rinse station on deck. Public restrooms are also available near the Keauhou Bay parking area on the east side of Kaleiopapa Street.
Yes. Beer, tropical cocktails, and mixed drinks are available for purchase onboard the Hoku Nui on all tours. Breakfast or light snacks and non-alcoholic beverages are included with every ticket depending on the tour. Guests may also bring additional non-alcoholic food and drinks. Glass containers are not permitted on the vessel.
The Hoku Nui is a genuine sailing catamaran that raises sail when conditions allow — typically on the passage out to Kealakekua Bay or Manta Village on favorable days. Sailing adds a quieter, more scenic dimension to the voyage. The vessel also has engines for navigation in calm or adverse conditions, ensuring reliable departures and returns regardless of wind.
