Sima Charters
Sima Charters BV is a Dutch owner-operator of 20+ purpose-built Crew Transfer Vessels, chartering 24/7 crew transfer, cargo, and integrated survey services to offshore wind, oil and gas, dredging, and government clients across North-Western Europe and beyond.
- Company typePrivate
- Founded-
- HeadquartersMaassluis, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Sima Charters does
Sima Charters BV is a Dutch privately held operator of Crew Transfer Vessels (CTVs) headquartered in Maassluis, the Netherlands, with additional operational berths in Hoek van Holland and IJmuiden. The company charters purpose-built monohull and catamaran CTVs — transporting up to 24 passengers plus cargo of up to 100+ pallets — to anchorages off the Dutch, Belgian, and East Anglian coasts and to offshore wind, oil and gas, dredging, and survey projects in North-Western Europe and beyond, on a 24/7 basis with sub-hour departure capability. Its owned fleet of 20+ vessels (including the SC Rotterdam, SC Topaz, Blue Whale, SC Sea Lord, and the SC gemstone series) is designed in-house, drawing on more than 20 years of operational experience, and integrates motion compensation, gyro stabilization, moonpools, A-frames, and survey desks so that the same hull can perform crew transfer, cargo supply, and survey duties.
The business model is enterprise sales-led, with quotes issued via a dedicated commercial inbox and 24/7 operational dispatch through a single phone line. Sima prices and contracts on a charter and lump-sum transport basis, ranging from multi-year offshore wind O&M campaigns to spot-market one-day deployments, with no public rate card. It maintains ISO 9001, ISO 14001, ISO 45001, SCL Level 3, and ISM DoC certifications, and operates a dedicated QHSE function, which functions as a credentialing moat for bidding Tier 1 offshore work with major developers (Ørsted, Vattenfall, London Array, TenneT), the four largest European marine contractors (Van Oord, DEME, Boskalis, Jan De Nul), the Port of Rotterdam, and Rijkswaterstaat. Through the IGL partnership, Sima bundles multibeam survey capability with crew transfer, and through Sima Shipbrokers, Nauticas Marine Services, and Sima Baltic it extends the brand beyond pure CTV chartering.
Sima Charters firmographics
Firmographics- Name
- Sima Charters
- Legal name
- Sima Charters BV
- Website
- https://simacharters.com
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Sima Charters BV is a Dutch owner-operator of 20+ purpose-built Crew Transfer Vessels, chartering 24/7 crew transfer, cargo, and integrated survey services to offshore wind, oil and gas, dredging, and government clients across North-Western Europe and beyond.
- Ownership category
- akta.pro rank
Sima Charters industry classification
Industry- Product category
- Offshore Crew Transfer Vessel Services
- NAICS
- Support Activities for Water Transportation (4883), Other Support Activities for Water Transportation (48839), Ship Building and Repairing (336611), Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing (532411)
- SIC
- Water Transportation (4400), Ship & Boat Building & Repairing (3730), Oil & Gas Field Services, Nec (1389)
- akta.pro primary industry
- Crew Transfer & Workboat Services (Tug-Adjacent Operations) (TLAHAHAM)
- akta.pro secondary industry
- Offshore/Remote Port Call & Anchorage Services (Launch Boats, Crew Boats, Supply Runs) (TLAHAJAM)
Keywords
Where Sima Charters is headquartered
LocationHeadquarters
- HQ city
- Maassluis
- HQ country
- Netherlands
- HQ region
- Europe
Offices3 records
Markets served
Sima Charters business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- CTV Charter Services: Charter of crew transfer vessels for crew transfer, cargo supply, and logistics services to offshore locations including wind farms, anchorages, oil and gas platforms. Services include 24/7 availability with quick response times and departures usually within the hour.
- Lump-sum Transport Solutions: Lump-sum transport solutions to vessels at anchorages and offshore locations. Includes cargo supply for up to 100+ pallets depending on vessel.
- Integrated Survey Services: Fully integrated survey solutions combined with crew transfer services through partnership with IGL, maximizing utilization of offshore time with multibeam systems readiness.
Go-to-market motion2 records
Distribution channels1 record
Marketing channels5 records
Sima Charters product offering
Product offeringCore offering
Sima Charters operates and charters a fleet of 20+ purpose-built Crew Transfer Vessels (CTVs) for the offshore sector, providing 24/7 crew transfer, cargo supply, and integrated survey services to offshore wind farms, oil and gas platforms, dredging and marine construction projects, and anchorage locations across North-Western Europe and globally. The company also designs and engineers custom CTVs in-house based on 20+ years of operational experience, delivering purpose-built monohull vessels optimized for workability, safety, comfort, and fuel efficiency.
Product overview
Sima Charters is a provider of Crew Transfer Vessel (CTV) charter services and vessel design, operating a fleet of 24 purpose-built CTVs including monohull and catamaran designs ranging from 6 to 24 passenger capacity. The company's product portfolio consists of four core services: Anchorage CTV Services (crew transfer and cargo supply from Dutch/Belgian ports to anchorages), Renewable Crew Transfer Services (offshore wind farm support), Dredging and Survey CTV Services (integrated survey solutions with IGL), and CTV Design (custom vessel engineering). The fleet includes vessels such as SC Elan, SC Falcon, SC Topaz (catamaran), SC Sea Lord (tug), Blue Whale (gyro-stabilized), SC Rotterdam (24 pax), and various SC gemstone-named vessels. Services operate 24/7 from Maassluis, Hoek van Holland, and IJmuiden, with global project deployment capability.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- Quick response with departures usually within the hour
- +2 more outcomes
Companies that use Sima Charters
Customer profileNamed customers14 records
Segments4 records
Ideal customer profiles5 records
Sima Charters technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Sima Charters partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core, minor and major.
- Van OordcoreMarine engineering and dredging company. Sima Charters provides crew transfer vessel services for Van Oord's offshore projects.
- DEME GroupcoreInternational group of specialized companies in dredging, maritime engineering, and environmental solutions. Sima Charters provides CTV services for DEME's offshore operations.
- IGLcorePartnership offering fully integrated survey solutions combined with crew transfer services. Combines Sima's CTV fleet with IGL's survey capabilities for maximum utilization of offshore time.
- ØrstedcoreLeading offshore wind farm developer. Sima Charters provides crew transfer services for Ørsted's offshore wind farm operations and maintenance.
- VattenfallcoreSwedish power company with offshore wind operations. Sima Charters provides crew transfer services for Vattenfall's wind farm projects.
- BoskaliscoreGlobal dredging and marine expert. Sima Charters provides CTV charter services for Boskalis offshore projects.
- Jan De Nul GroupcoreLuxembourg-based engineering conglomerate in dredging, offshore, and infrastructure. Sima Charters provides vessel charter services.
- Hebo Marine ServicesminorMaritime services provider in the Netherlands. Partnership for maritime support services.
- Wilhelmsen Ships ServiceminorGlobal maritime services company. Partnership for ships service and support.
- TenneTcoreDutch transmission system operator for electricity. Sima Charters provides offshore support services for TenneT's energy infrastructure projects.
- Fehmarn Belt ContractorsmajorConsortium for the Fehmarn Belt Fixed Link project. Sima Charters provides CTV services for this major European infrastructure project.
- London ArraymajorOffshore wind farm project in the Thames Estuary. Sima Charters provides crew transfer services for the London Array wind farm.
- KistosmajorOil and gas company. Sima Charters provides offshore crew transfer services for Kistos operations.
- Port of RotterdammajorLargest port in Europe. Strategic partnership for port operations and maritime services.
- RijkswaterstaatmajorDutch government agency responsible for public works and water management. Partnership for government maritime services.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
Sima Charters competitors and assessment
Company assessmentDirect peers
- Hebo Marine Services: Dutch maritime services provider offering offshore support, crew transfer, and supply services. Listed as a partner of Sima but also operates overlapping CTV and offshore support capabilities in the same geography.
- Windcat Workboats: One of the largest European CTV operators with a large catamaran fleet serving offshore wind. Direct competitor in the same NW European crew-transfer market and similar blue-chip wind developer customer base.
- Tidal Transit: UK-based CTV operator focused on offshore wind crew transfer, also operating some hybrid CTV/SOV vessels. Closely comparable in service offering and end-customers (offshore wind developers and O&M contractors).
- Seacat Services: UK CTV operator providing crew transfer and survey support to offshore wind and oil & gas. Comparable in scale, vessel type, and target customers across the North Sea.
- Njord Offshore: Offshore vessel operator providing CTV and small support vessel charter services for offshore wind and oil & gas. Directly comparable charter-based model and European operating geography.
- Maritime Craft Services (MCS): CTV operator serving the European offshore wind market with a fleet of purpose-built crew transfer vessels. Competes for the same wind developer and O&M contracts as Sima Charters.
- Northern Offshore Services (NOS): Swedish-based operator of CTVs and offshore service vessels, focused on the European offshore wind sector. Comparable charter-based service model with overlapping North Sea and Baltic coverage.
Broad incumbents
- Esvagt: Danish offshore service vessel operator and a leading SOV provider for offshore wind. Overlaps with Sima in offshore wind support services but operates a broader fleet including larger SOVs; a key incumbent in the same end-market.
- Vroon Offshore: Dutch offshore support vessel operator with PSVs, AHTS, and subsea support vessels. Operates in adjacent offshore support categories, serving many of the same oil & gas and offshore wind customers.
Others
- Damen Shipyards: Major Dutch shipbuilder with a standardized CTV/ FCS range. Comparable in vessel design philosophy and Dutch maritime ecosystem, though positioned upstream as a builder rather than operator.
Market position
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Sima Charters social profiles
Digital presenceSima Charters compliance and trust
Trust signalCompliance5 records
Sima Charters financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sima Charters leadership team
Management profileNumber of profiles
Sima Charters funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sima Charters M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sima Charters
What does Sima Charters do?
Sima Charters operates and charters a fleet of 20+ purpose-built Crew Transfer Vessels (CTVs) for the offshore sector, providing 24/7 crew transfer, cargo supply, and integrated survey services to offshore wind farms, oil and gas platforms, dredging and marine construction projects, and anchorage locations across North-Western Europe and globally. The company also designs and engineers custom CTVs in-house based on 20+ years of operational experience, delivering purpose-built monohull vessels optimized for workability, safety, comfort, and fuel efficiency.
Is Sima Charters a public or private company?
Sima Charters is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sima Charters founded?
Sima Charters was founded in -1. It employs 11 to 50 people.
Where is Sima Charters based?
Sima Charters is headquartered in Maassluis, Netherlands, in the Europe region.
How does Sima Charters make money?
Three revenue lines are on record. CTV Charter Services are the primary driver. The others are lump-sum Transport Solutions and integrated Survey Services.
Who are Sima Charters's main competitors?
Direct peers on record are Hebo Marine Services, Windcat Workboats, Tidal Transit, Seacat Services, Njord Offshore, Maritime Craft Services (MCS) and Northern Offshore Services (NOS). Broad incumbents are Esvagt and Vroon Offshore. Damen Shipyards is listed as an others.
Does Sima Charters have an API?
No public API is recorded for Sima Charters.
What industry is Sima Charters in?
Sima Charters's product category is Offshore Crew Transfer Vessel Services. Its primary akta.pro industry code is TLAHAHAM, Crew Transfer & Workboat Services (Tug-Adjacent Operations), with a secondary code of TLAHAJAM, Offshore/Remote Port Call & Anchorage Services (Launch Boats, Crew Boats, Supply Runs). Its NAICS code is 4883 and its SIC code is 4400.