Stormer

What Stormer does

Stormer Marine B.V. is a Dutch shipyard that designs and builds aluminium workboats for professional and government clients worldwide. The company operates from two production facilities in the Netherlands — its headquarters in Hoorn and a newer manufacturing site in Harderwijk opened in 2025. Founded in 2007 by Richard Gramser and Erwin Hilbrands, both with backgrounds in shipbuilding, engineering, and maritime fieldwork, Stormer holds NATO Commercial and Government Entity Code H2PC2, certifying it for government and defence procurement across NATO jurisdictions.

Stormer's product portfolio comprises four off-the-shelf series covering 18 model variants from 4.5 to 13 metres in length: the Harbour series for port operations, mooring, line handling, and crew transfers; the Rescue & Patrol series for search-and-rescue, law enforcement, and coastguard duties; the RIB series for high-speed patrol, interception, and tactical support; and the Porter series for hydrographic surveying and multipurpose work. All vessels are constructed from marine-grade 5–8mm 5083 aluminium alloy with modular, configurable deck layouts supporting mission-specific equipment (winches, bollards, moonpools, echo sounders, cabins). Propulsion options span diesel inboard/outboard, jet, hybrid, and full-electric systems, with the Harbour 110 E offering a zero-emissions configuration.

The company generates revenue primarily through direct one-time sales of custom-configured vessels, supplemented by a 'Front Runner' charter programme that lets customers operate a Stormer boat while their own is being built, and after-sales support and commissioning services. Go-to-market is enterprise-direct, anchored on participation in major international maritime exhibitions (BOOT Düsseldorf, Europort Rotterdam, International Workboatshow) and a quote-based website channel. Primary customer segments are governmental agencies (police, coastguard, fire services, search-and-rescue organisations such as KNRM), port authorities and terminal operators, survey and research contractors, and construction/dredging operators.

Name

Stormer

Legal name

Stormer Marine B.V.

Website

https://stormerworkboats.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

Stormer Marine B.V. is a Dutch shipyard that designs and manufactures modular aluminium workboats (4.5–13m) across four series — Harbour, Rescue & Patrol, RIB, and Porter — for government agencies, port authorities, survey contractors, and marine operators worldwide.

Ownership category

akta.pro rank

Product category

Commercial Workboats

NAICS

Boat Building (336612)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Patrol, Interceptor & Law-Enforcement Craft (Coast Guard, Customs) (IMAJADAD)

akta.pro secondary industries

Search & Rescue (SAR) & Lifeboats (IMAJADAI), Fireboats & Emergency Response Craft (IMAJADAH)

Keywords

• Aluminium workboats
• Harbour workboats
• Rescue patrol vessels
• Rigid inflatable boats
• Hydrographic survey boats

Headquarters

HQ city

Hoorn

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Workboat Sales: Direct sale of aluminium workboats across four series (Harbour, Rescue & Patrol, RIB, Porter) with lengths ranging from 4.5 to 13 meters. Custom configurations available based on customer operational requirements.
2. Charter Services: Stormer offers charter options for vessels, including a 'Front Runner' charter service that allows customers to operate a Stormer vessel while their own is being built.
3. After-Sales Support and Service: Reliable after-sales support including commissioning, operational setup and technical assistance to ensure vessel performance from day one.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

Stormer designs and manufactures off-the-shelf aluminium workboats across four series—Harbour (port operations), Rescue & Patrol (SAR and law enforcement), RIB (high-speed patrol/interception), and Porter (multipurpose/survey)—with 18 model variants ranging from 4.5 to 13 metres. All vessels use marine-grade 5–8mm 5083 aluminium hulls and are configurable with diesel, electric, hybrid, inboard, outboard, or jet propulsion plus mission-specific equipment such as winches, bollards, moonpools, and echo sounders.

Product overview

Stormer designs and produces powerful, off-the-shelf aluminium workboats engineered for demanding industrial and defence environments. The product portfolio comprises four distinct series: Harbour Series (H45-H110) for port operations including mooring, line handling, and crew transfers; Rescue & Patrol Series (RP60-RP85) for search and rescue, law enforcement, and coastguard duties; RIB Series (R75, R75 SAR, R90) for high-speed patrol, interception, and tactical support operations; and Porter Series (P65-P110) multipurpose workboats suited for hydrographic surveying, harbour duties, and patrol tasks. All vessels feature marine-grade aluminium construction (5083 alloy, 5-8mm thickness), configurable layouts, and optional equipment including cabins, winches, echo sounders, moonpools, and propulsion systems ranging from diesel inboard to electric and hybrid solutions. Stormer operates from facilities in Hoorn and Harderwijk, Netherlands, and holds NCAGE Code H2PC2 for government and defence sector engagements.

Differentiator

Problem solved

Functional benefit

Products and services

• Harbour Series Workboats Heavy-duty aluminium workboat platform for daily port operations including mooring, line handling, crew transfers, harbour patrol, inspections, and emergency response. Configurable deck layouts with marine-grade 5083 aluminium construction (5–8mm). Available in six models (H45, H60, H75, H78, H90, H110) with propulsion options including outboard, inboard, inboard jet, and full electric (H110 E). Built for port authorities, terminal operators, and marine service providers.
• Rescue & Patrol Series Workboats Mission-ready aluminium workboat platform for search and rescue, law enforcement, and coastguard operations. Features integrated side protection for crew safety, exceptional manoeuvrability, and configurable decks for specialised equipment including stretchers and thermal imaging. Available in four models (RP60, RP65, RP75, RP85) with outboard propulsion. Built for police, coastguards, fire services, and maritime authorities requiring rapid deployment and reliable performance in critical missions.
• RIB Series Workboats High-speed rigid inflatable boat platform engineered for patrol, interception, and tactical support operations. Features aluminium deep-V hulls with heavy-duty fendering and optional suspension seating, providing agility, safety, and reliability for frontline maritime operations. Available in R75, R75 SAR (Search and Rescue variant), and R90 models (7.5–13 metres) with inboard, outboard, or twin outboard propulsion. Built for law enforcement, coastguards, and military operators requiring speed and manoeuvrability.
• Porter Series Workboats Multipurpose aluminium workboat platform marketed as the 'pick-up truck of the sea', suited for hydrographic surveying, harbour operations, and patrol tasks. Features configurable layouts including optional cabins, winches, bollards, moonpools, echo sounders, davit cranes, gyro stabilisers, and survey equipment. Available in five models (P65, P68, P78, P90, P110) with outboard, twin outboard, inboard sterndrive, or twin inboard propulsion. Built for survey contractors, research institutions, dredging firms, and port operators requiring versatility and adaptability.
• Front Runner Charter Service

Quantifiable outcome

• Bollard pull of 0.86 ton (Harbour 75 with Yanmar 4LV150)
• +2 more outcomes

Named customers5 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

Feature5 records

Partnerships

Two partnerships are on record, tiered core and flagship.

• KNRM (Koninklijke Nederlandse Redding Maatschappij)coreStrategic or Co-development PartnerStormer Workboats delivered the 'Jaap Pronk' vessel to KNRM, the first of the Chaterina D-class completed at their new Harderwijk facility. This represents a significant manufacturing partnership for rescue vessels. The vessel is designed for rescue operations and carries the legacy of Jaap Pronk, a respected volunteer and coastal figure. Stormer is building additional Chaterina D-class vessels for KNRM.
• Police NetherlandsflagshipStrategic or Co-development PartnerPolice Netherlands featured Stormer's RIB90 on their stand at BOOT Düsseldorf, one of the world's leading international marine exhibitions. This collaboration highlights the vessel's suitability for real-world safety operations and demonstrates purpose-built design translating into operational effectiveness for maritime authorities.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Emerging players

• Viking Norsafe: Norwegian builder of lifeboats, rescue craft, and professional workboats. Comparable to Stormer's SAR/Rescue & Patrol offerings and overlaps on the marine-grade aluminium hull approach, but with a stronger global service network.

Broad incumbents

• Damen Shipyards: Large Dutch shipbuilder with a comprehensive portfolio that includes small workboats, patrol vessels, and tugs. Relevant as a same-country incumbent competing for the same Dutch government and port authority contracts Stormer targets, but at significantly greater scale and breadth.
• Fassmer: German shipyard with a broad portfolio spanning lifeboats, rescue craft, patrol boats, and naval vessels. Comparable to Stormer in SAR and patrol workboats, but a much larger incumbent offering complete shipbuilding programmes in addition to small craft.

Direct peers

• Metal Shark Boats: US aluminium boat builder with a strong defence and law enforcement portfolio, including patrol and response vessels. Comparable to Stormer on aluminium hull construction and on serving police, military, and government security clients.
• ASIS Boats: UAE builder of aluminium RIBs and patrol boats for defence, security, and professional clients. Comparable to Stormer's RIB series in mission, aluminium hull construction, and use by police/coastguard customers.
• Maritime Partner: Dutch builder of aluminium workboats and patrol craft serving ports, police, and coastguard clients. Most direct head-to-head competitor to Stormer in the small aluminium professional workboat category, with overlapping product ranges, customer segments, and a similar European footprint.
• Tuco Marine Group: Danish builder of professional workboats and patrol vessels for harbour, coastguard, and survey use cases. Closely comparable to Stormer on modular aluminium hull design, configurable deck layouts, and government/SAR customer base.
• Baltic Workboats: Estonian shipyard building small to mid-size aluminium workboats and patrol vessels for ports, coastguards, and research. Comparable to Stormer in vessel size, aluminium construction, and primary segments (government, port services, survey).
• Safe Boats International: US builder of aluminium patrol and rescue boats widely used by police, fire, and coastguard agencies. Comparable to Stormer's Rescue & Patrol and RIB series in mission, aluminium construction, and government/defence customer mix.
• Alumarine: Finnish builder of aluminium workboats and pilot boats for harbour and professional use. Comparable to Stormer on aluminium construction, professional/harbour customer focus, and similar vessel size range.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stormer

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Stormer