40m Adventure Phinisi
40m Adventure Phinisi

Siloina

Twin phinisis launched in 2023 and 2024 for the Mentawai surf circuit and the breaks beyond.

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40m
Length
10 Guests
Capacity
5 Cabins
Accommodations
14 Crew
Dedicated Staff
From $30,100
Weekly Charter

The Yacht

Twin sister phinisis, built around the year-round surf program of Mentawai

Siloina I and Siloina II are two completely identical phinisis, launched in 2023 and 2024. They were drawn by architect Marc Christoffel and built to a brief tied to one region above all others: the Mentawai Islands, with the Sumatra-side breaks of Aceh, Nias, the Banyaks, and the Telos as the supporting routes.

Each vessel runs forty meters with the same five-cabin layout, the same engine, and the same tender complement. Cruising is identical so guests on either yacht get the same trip; operations are identical so the crew can move between vessels without retraining. Running two boats means simultaneous charters and a program that operates as a small fleet.

Each Siloina carries two aluminum console-steering tenders with 100 hp Suzuki four-stroke engines. Speed off the mother ship is what makes a Mentawai trip work: the difference between a clean session and a long wait onshore is often a few minutes of tender time, and the boats are sized to make that ride brief and dry.

Five air-conditioned, en-suite cabins accommodate up to ten guests. Each cabin converts between double and twin configurations. Three sun decks above stack for sunrise sessions, midday shade, and evening drinks; the air-conditioned salon below holds the bar, the library, the games, and the screen for the day's footage review.

What separates Siloina from larger yachts with similar range is the focus. Where the breaks are running, the boats are there; where the breaks are flat, the program shifts to spearfishing, trolling, jigging, scuba, or simply the islands. The crew is built around that flexibility.

COMPARE YACHTS
Siloina cabin interior with teak finishes

The Experience

A Day Aboard Siloina

The day starts before sunrise. The crew has read the swell forecast and the tide tables, and the tenders are loaded. By six the first surfers are on the water, paddling out to a break that, for the next few hours, is theirs. Breakfast is ready when they return; the chef has been up since 5:30. Between sessions, guests eat on the mid-deck, review the morning's footage on the top-deck screen, or settle in the air-conditioned salon.

Fourteen crew looking after up to ten guests means no one queues for a tender, a tank refill, or a coffee. Afternoon sessions run until the light fails. Evenings settle around the upper-deck bar, sundowners while the crew finishes dinner, and the surf guide briefs tomorrow's conditions over dessert. The rhythm is structured enough to maximize water time and relaxed enough that no one feels scheduled.

Guests surfing at the Mentawai Islands with Siloina anchored in the background

The Vessel

Technical Specifications

Two Vessels, One Program

Siloina I and Siloina II are completely identical. Same hull, same five-cabin layout, same Suzuki tenders, same fully stocked bar. The two-vessel structure means simultaneous charters, faster turnarounds between bookings, and a crew that moves between yachts without missing a step. Either vessel delivers the same trip.

Accommodation

Five Cabins, All Convertible

Each Siloina has five air-conditioned, en-suite cabins. Each cabin converts between double and twin configurations, so the same berth works for a couple traveling together and for two friends sharing on a group trip. Hot, fresh-water showers, full air conditioning, and finishes in warm timber.

For surf coaches, photographers, and group leaders, an extra crew cabin can be made available on request. With ten guest berths plus the optional crew cabin, groups have room to bring the surf coach or the photographer without compromising the guest cabins.

Siloina cabin interior with double-twin convertible berth and warm timber finishes
Siloina anchored off an uninhabited island in the Mentawai archipelago

The anchorage is yours alone, the break is firing, and the tenders are already in the water.

The Team

Meet the Crew

Fourteen crew for up to ten guests works out to more than one crew member per guest. The surf guide knows the breaks across the Mentawai and the northern routes, built across seasons rather than single trips. The chef is internationally trained and accommodates dietary requirements with notice.

Experienced Navigator
Captain

Experienced Navigator

Indonesian waters specialist with extensive Mentawai and northern archipelago routing experience

Surf Guide
Surf Guide

Surf Guide

Seasoned guide covering both Mentawai and northern route zones, with swell forecasting and spot selection expertise

Internationally Trained
On Board Chef

Internationally Trained

Internationally trained, catering to dietary requirements. Gourmet meals from pre-dawn breakfast through to late dinner

Service Excellence
Cruise Director

Service Excellence

Manages the daily program, coordinates activities, and ensures guest preferences are communicated across the entire crew

"

Eat, surf, sleep... repeat. Best surf trip ever.

Siloina Charter Guest

Los Angeles, California

Charter Rates

Siloina Pricing

Mentawai Islands

Peak season (May to October)

$30,100 /week

Mentawai Islands

Shoulder season (March, April, November)

$28,000 /week

Mentawai Islands

Low season (December to February)

$25,200 /week

Weekly rates for the Mentawai Islands, plus 12% Indonesian VAT. The same rates apply in 2026 and 2027. Charters in Aceh, the Banyaks, Nias, and the Telo Islands are quoted on request.

Included

  • Full crew
  • All meals and non-alcoholic beverages
  • Fuel for planned itinerary
  • Surfing and water sports equipment
  • Airport and hotel transfers at the port of embarkation
  • Satellite internet (Starlink)
  • Laundry service

Additional

  • Spirits, beer, and wine
  • Special provisioning
  • Surf rental equipment and lessons
  • Local surf taxes
  • Crew gratuities (10 to 15% customary)
  • Flights and pre or post-charter logistics
Questions

Siloina FAQ

How much does a Siloina charter cost?

Siloina charters in the Mentawai Islands at $30,100 per week in peak season (May to October), $28,000 in shoulder season (March, April, November), and $25,200 in low season (December to February). The same rates apply in 2026 and 2027, plus 12% Indonesian VAT. Charters in Aceh, the Banyaks, Nias, and the Telo Islands are quoted on request.

What surf level is required?

Siloina caters to a range of ability levels. Shoulder season (October to April) produces smaller, cleaner conditions suited to longboarders and intermediate surfers. Prime season (May to September) brings the consistent four-foot-plus swells that suit experienced surfers. The surf guide selects spots daily based on the group's ability, so mixed-level groups work well.

What is included in the charter rate?

The rate includes a full crew, all meals and non-alcoholic beverages, fuel for the planned itinerary, surfing and water sports equipment, airport and hotel transfers at the port of embarkation, satellite internet, and laundry service. Spirits, beer, and wine, special provisioning, surf rental equipment and lessons, local surf taxes, crew gratuities (10 to 15% customary), and flights are additional.

How many guests can book per cabin?

Each of the 5 cabins accommodates two guests in either a double or twin configuration. Full charter capacity is 10 guests. Charter Siloina I or II as a private whole-boat booking, or enquire about individual cabin availability on scheduled departures. An extra crew cabin can be made available for surf coaches, photographers, or group leaders.

Further Reading

From the Journal

Dispatches from Indonesia's most extraordinary waters. Yacht features, expedition reports, and the stories behind our most memorable charters.

Interested in Chartering Siloina?

Please get in touch to discuss planning your private charter.