Zeilschool iSail

What Zeilschool iSail does

Zeilschool iSail is a privately held Dutch sailing school founded in 2015 by Brent Biesheuvel in Hellevoetsluis, Netherlands, operating from a waterfront facility called the Ark — a two-story liveaboard vessel with 36 berths, a professional kitchen, instruction room, bar and terrace directly on the Haringvliet waterway. The school delivers NWD-certified (Nationaal Watersportdiploma) sailing instruction across four primary customer segments: children and youth (ages 7-17) attending overnight or day camps; adults taking trial lessons, four-level cabin sailing certification courses, or private instruction on their own boats; corporate groups participating in team challenges, match racing and combined sailing-coaching team training; and experienced individual sailors renting Polyvalk boats by time slot. Its fleet comprises 9 youth boats matched to age bands (Optimist, Topper Tres, Topper TAZ, Splash, Laser, Valk, Hobby Cat Dragoon, Nacra Inter 18) and three adult cabin yachts (Sigma 38, Elan 40, First 36), with a 45-instructor team that is predominantly drawn from former students.

The core technology is the NWD instructional curriculum and methodology, layered onto a direct-to-consumer distribution model in which bookings are taken through the company's own website booking system, phone and email — no third-party resellers are used. Pricing is unit-based and disclosed transparently: €149 for a 3-hour adult trial lesson, €745 per NWD cabin-sailing level (six lessons including theory and exam), Polyvalk rentals from €67.50 to €100 per half/full day with a €250 deposit, and quote-based pricing for corporate events of 10-200 persons. Youth camp packages (Ontdekker single day, Zeiler week without overnight, Kapitein full week with accommodation) operate on a subscription-style payment with 50% deposits and graduated cancellation terms.

The business is bootstrapped and founder-owned, with no disclosed external funding, no subsidiaries, and no M&A activity. Customer acquisition relies on word-of-mouth amplified by Instagram stories during camp weeks, a blog with sailing content, and a newsletter; community ties are reinforced through local sailing-club partnerships and an annual charity regatta (Sail4Care). The company is actively operating and selling 2026 programming, with the website footer copyright dated 2026.

Name

Zeilschool iSail

Legal name

Zeilschool iSail

Website

https://zeilschoolisail.nl

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Zeilschool iSail is a Dutch NWD-certified sailing school in Hellevoetsluis founded in 2015, delivering youth sailing camps, adult cabin-sailing courses, corporate team events and Polyvalk rentals from the 36-berth Ark facility on the Haringvliet.

Ownership category

akta.pro rank

NAICS

Sports and Recreation Instruction (61162)

SIC

Services-Amusement & Recreation Services (7900)

akta.pro primary industry

Sailing Experiences (Lessons, Regattas, Day Sails) (THAJAJAG)

akta.pro secondary industry

Water & Marine Guiding Services (Kayak, Canoe, Raft, SUP, Sailing) (THAAALAB)

Keywords

• Sailing instruction services
• Youth sailing camps
• Adult sailing courses
• Corporate team building
• Sailboat rental

Headquarters

HQ city

Hellevoetsluis

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Others

Revenue model

1. Youth Sailing Camps: Week-long youth sailing camps with or without overnight stay, including packages for children aged 7-17 with instruction, meals, and accommodation at the Ark
2. Valk Boat Rental: Polyvalk rental by time slot (morning, afternoon, evening, full day) for experienced sailors who want independent sailing
3. Adult Sailing Courses: NWD cabin sailing courses at 4 levels (€745 each) and trial lessons for adults
4. Corporate Events: Team building events, match racing, and corporate sailing experiences with catering at the Ark
5. Private Lessons on Own Boat: Instructor travels to customer's harbor anywhere in Netherlands for private sailing instruction on customer's own boat

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Zeilschool iSail is a Netherlands-based sailing school offering structured sailing education for children (ages 7-17), adults, and corporate groups at its Hellevoetsluis base. Core services include week-long youth sailing camps with overnight accommodation at its 'Ark' facility, NWD-certified cabin sailing courses for adults, trial lessons, private lessons on customers' own boats, corporate team-building events, and Polyvalk sailboat rentals. The school operates a fleet of 9 boats on the sheltered Haringvliet waterway with 45 instructors.

Product overview

Zeilschool iSail is a sailing school in Hellevoetsluis, Netherlands, founded in 2015, offering a portfolio of sailing education and experiences. The core offerings include youth sailing camps (Jeugdzeilkamp) with three package tiers (Ontdekker day experience, Zeiler week without overnight, Kapitein full week with accommodation), adult sailing lessons (Proefles trial lessons, NWD Kajuitcursus certification courses at 4 levels, and private lessons on customer's own boat), corporate team events (Teamchallenge and Teamtraining programs), and Polyvalk boat rental. The company operates from the 'Ark' — a two-story houseboat facility with 36 berths, kitchen, bar, and instruction space. All programs are NWD-recognized and delivered by a team of 45 instructors, predominantly former students.

Differentiator

Problem solved

Functional benefit

Products and services

• Jeugdzeilkamp (Youth Sailing Camp) Week-long sailing camps for children ages 7-17, offered as overnight (Kapitein), day-only (Zeiler), or single-day (Ontdekker) packages, with NWD-certified instruction on age-appropriate boats and accommodation/meals at the Ark facility.
• Proefles Volwassenen (Adult Trial Lesson)

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered minor and core.

• Stichting Vrienden van MiddinminorStrategic or Co-development Partner · 8 May 2026Charitable foundation that was beneficiary of the Sail4Care 2026 regatta organized by iSail, raising €22,000 for the foundation.
• Stichting Sailing KidsminorStrategic or Co-development Partner · 8 May 2026Charitable foundation that was beneficiary of the Sail4Care 2026 regatta organized by iSail, raising €2,500 for the foundation.
• WV AegirminorStrategic or Co-development Partner · 10 April 2020Rotterdam sailing association that partnered with iSail for online instructor training during Corona period.
• JobBootcampcoreStrategic or Co-development PartnerProfessional team training provider that combines sailing with professional coaching for corporate team building programs at iSail.
• WSV HeliusminorStrategic or Co-development PartnerLocal sailing club that organizes competitions and events on the Haringvliet, sharing calendar with iSail.
• WSV HellevoetsluisminorStrategic or Co-development PartnerLocal sailing club organizing events including Ronde Tiengemeten on the Haringvliet.
• WSV Het Bommelse GorsminorStrategic or Co-development PartnerLocal sailing club organizing Mosselraces on the Haringvliet in September 2026.

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Watersportcampus Groningen: Dutch water sports campus that combines sailing instruction, boat rental and corporate events comparable to iSail's multi-segment offering, though on a larger and more institutional scale.
• Frisse Wind Zeilschool: A Dutch sailing school active on inland waters offering youth camps and adult sailing lessons; closely comparable to iSail in curriculum, segment focus and direct-to-consumer online booking model within the Dutch market.
• Zeilschool De Pean: A Dutch sailing school in Friesland offering youth sailing camps, adult courses, and boat rental on protected Frisian waters — directly comparable to iSail in service mix, target segments (kids and adults learning to sail), and NWD-style curriculum-based instruction.
• Neptune Sailing: Dutch sailing school offering sailing courses, youth camps and rentals; comparable to iSail on the integrated curriculum + boat rental model operating in the Dutch protected-waters market.

Broad incumbents

• UKSA (United Kingdom Sailing Academy): Established UK sailing academy combining youth courses, adult RYA instruction, residential facility, and corporate team-building — comparable on the residential-sailing-school model and curriculum-based instruction though larger in scale and operating in the UK market.
• Sunsail: Global sailing holiday and bareboat charter brand that also runs flotilla training and learn-to-sail weeks; overlapping on the sailing-instruction-plus-residential-experience offering though with much broader geographic footprint and brand recognition.
• Dream Yacht Charter: International sailing charter and training operator offering sailing courses and flotilla holidays in many destinations; comparable through its combine yacht-charter and adult sailing instruction model, but far larger and globally diversified.

Regional players

• MedSailors: Specialist operator of learn-to-sail flotilla holidays in the Mediterranean, including adult RYA beginners' weeks — directly comparable on the adult "learn to sail" package but focused on a Mediterranean fleet/customer base rather than Dutch sheltered waters.
• Sailing Holidays (Greek/Caribbean operators): Long-established bareboat and flotilla operator offering adult learn-to-sail weeks and RYA courses in Greece — overlapping on adult sail-training products but operating in Mediterranean and Caribbean geographies.

Others

• Club Med (water sports programs): Global resort operator whose all-inclusive resorts include sailing schools and water sports instruction; indirectly comparable as a sailing-instruction deliverer, though embedded in a much broader resort product.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/zeilschoolisail
• LinkedInlinkedin.com/company/zeilschool-isail

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zeilschool iSail