Siem Shipping
Siem Shipping is a privately held UK-based maritime services group operating an integrated portfolio of Pure Car and Truck Carriers, ship management, vessel leasing, and NVOCC logistics, serving automotive OEMs (anchored by Volkswagen Group), offshore energy, and industrial shippers across global trade lanes.
- Company typePrivate
- Founded-
- HeadquartersSutton, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Siem Shipping does
Siem Shipping is a privately held, UK-headquartered maritime services group operating as part of Luxembourg-based Siem Industries Inc. It runs an integrated portfolio across five service lines: Siem Car Carriers (PCTC and RORO vehicle transportation), Siem Offshore (offshore support vessels — AHTS, PSV, OSCV — though the offshore fleet was fully transferred to Aurora Offshore in July 2025), Siem Ship Management (third-party vessel management for refrigerated, container, RORO and automobile tonnage), Seven Yield (long-term bareboat charter leasing, including the S&I Leasing 50/50 joint venture with ITOCHU Corporation), and Siem Global Logistics (NVOCC freight forwarding and supply-chain solutions).
The company operates a fleet of approximately 30 vessels, with the strategic core now anchored on Pure Car and Truck Carriers including SIEM Confucius and SIEM Aristotle — the world's largest LNG dual-fuel PCTCs delivered in 2020, each with 7,500 RT capacity, dual 1,800 m³ LNG tanks, and 25% CO2 / 100% SOx emissions reductions versus conventional fuel. In March–April 2026 the PCTC roster was further expanded through the additions of SIEM Darwin (6,179 vehicles), SIEM Newton (4,888 vehicles) and SIEM Edison (4,900 vehicles). Vessel-level technology spans DP2 dynamic positioning, 250-ton AHC subsea cranes rated to 3,000 m water depth, and diesel-electric hybrid propulsion on offshore units.
Revenue is generated through four streams: long-term and spot vessel charter contracts (subscription/recurring), ship-management fees (professional services), logistics and freight-forwarding fees (transaction-based), and bareboat lease income (subscription/recurring). The go-to-market model combines direct enterprise sales to major OEMs — Volkswagen Group is the anchor charterer on Atlantic LNG-PCTC routes — with a global commercial agent network (Korea, Mexico, Russia, Ukraine, Latvia, Poland) and industry-association positioning (AIAG, ECG). Pricing is contractually negotiated and not publicly disclosed; revenue visibility is supported by multi-year charters and green-loan JOLCO financing structures.
Siem Shipping firmographics
Firmographics- Name
- Siem Shipping
- Legal name
- Siem Shipping UK Limited
- Website
- https://siemshipping.com
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Siem Shipping is a privately held UK-based maritime services group operating an integrated portfolio of Pure Car and Truck Carriers, ship management, vessel leasing, and NVOCC logistics, serving automotive OEMs (anchored by Volkswagen Group), offshore energy, and industrial shippers across global trade lanes.
- Ownership category
- akta.pro rank
Siem Shipping industry classification
Industry- Product category
- Maritime Shipping and Logistics Services
- NAICS
- Deep Sea Freight Transportation (483111), Freight Transportation Arrangement (488510)
- SIC
- Deep Sea Foreign Transportation Of Freight (4412), Arrangement Of Transportation Of Freight & Cargo (4731), Water Transportation (4400)
- akta.pro primary industry
- Finished Vehicle Ocean RoRo & Deep-Sea Vehicle Carriers (TLADAJAC)
Keywords
Where Siem Shipping is headquartered
LocationHeadquarters
- HQ city
- Sutton
- HQ country
- United Kingdom
- HQ region
- Europe
Offices9 records
Markets served
Siem Shipping business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Personnel, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Vessel Charter Services: SIEM generates revenue through long-term and spot charter contracts for its owned fleet of PCTC, RORO, offshore, and reefer vessels. The company operates vessels for major automotive manufacturers and offshore energy companies on time charter and voyage charter basis.
- Ship Management Services: Siem Ship Management provides comprehensive vessel management services including crewing, technical management, and operational support for various vessel types. Revenue is generated through management fees charged to vessel owners.
- Logistics Services: Siem Global Logistics (SGL) operates as an NVOCC (Non-Vessel Operating Common Carrier), providing freight forwarding, logistics, and supply chain solutions. Revenue comes from logistics fees and freight rates charged to customers.
- Vessel Leasing (Bareboat Charter): Seven Yield provides vessel leasing solutions through long-term bareboat charter contracts to counterparties in the shipping and offshore sectors. This generates lease income over contract periods.
Go-to-market motion3 records
Distribution channels3 records
Marketing channels5 records
Siem Shipping product offering
Product offeringCore offering
Siem Shipping operates a diversified maritime services platform through five interconnected business lines: Siem Car Carriers (Pure Car and Truck Carrier operations for finished vehicle transport), Siem Offshore (AHTS, PSV, and OSCV offshore support vessels for the energy industry), Siem Ship Management (third-party vessel management including crewing and technical management), Seven Yield (long-term bareboat vessel leasing), and Siem Global Logistics (NVOCC freight forwarding and supply chain services). The company manages a fleet of 30+ owned and chartered vessels including LNG dual-fuel PCTCs.
Product overview
Siem Shipping operates as a diversified maritime services company offering specialised shipping solutions through five interconnected service lines: Siem Car Carriers (automobile and RO-RO transportation), Siem Offshore (offshore support vessel operations), Siem Ship Management (vessel management services), Seven Yield (shipping leasing solutions), and Siem Global Logistics (NVOCC freight forwarding). The company manages a fleet of owned and leased vessels spanning Pure Car and Truck Carriers (PCTC), Offshore Support Vessels (OSCV, AHTS, PSV), Roll-on Roll-off (RORO) vessels, and refrigerated reefers. The portfolio includes innovative LNG dual-fuel powered PCTC vessels (SIEM Aristotle, SIEM Confucius) representing leading environmental technology in automotive logistics.
Differentiator
Problem solved
Functional benefit
Products and services
- Siem Car Carriers Specialised transportation of automobiles, roll-on/roll-off (RO-RO) and break bulk cargo via a fast, regular and direct service across global trade routes, operating a fleet that includes LNG dual-fuel Pure Car and Truck Carriers (PCTC).
- Siem Offshore Ownership and operation of a versatile fleet of state-of-the-art Offshore Support Vessels including AHTS (Anchor Handling Tug Supply), PSV (Platform Supply Vessel), and MSV/OSCV vessels serving the global offshore energy industry with subsea construction, towing, anchor handling, and platform supply services.
- Siem Ship Management Comprehensive third-party vessel management services for refrigerated cargo, containers, RoRo cargoes, and automobile carriers, including crewing, technical management, and operational support for various vessel types.
- Seven Yield Vessel Leasing Long-term bareboat charter contracts and leasing solutions to counterparties across the industrial shipping and offshore oil-service sectors.
- Siem Global Logistics (NVOCC) Non-Vessel Operating Common Carrier (NVOCC) providing freight forwarding, customs clearance, cargo consolidation, and logistics solutions for automobiles, agricultural equipment, oversized shipments, and refrigerated cargo across China, Mexico, US, and London operations.
Quantifiable outcome
- 65% reduction in onshore CO2 emissions (205 to 134 metric tons) from 2023 to 2024
- +6 more outcomes
Companies that use Siem Shipping
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Siem Shipping technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Siem Shipping partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered strategic, core and minor.
- Automotive Industry Action Group (AIAG)strategicSIEM re-joined AIAG as Siem Car Carriers member, strengthening alignment with global automotive standards and best practices. AIAG brings together OEMs, suppliers and service providers to develop industry standards and drive quality and sustainability initiatives.
- ECG (Association of European Vehicle Logistics)strategicSIEM became a member of ECG, which has represented the interests of finished vehicle logistics sector across Europe since 1997. With 200+ member companies spanning road, rail, maritime and inland waterways, ECG serves as the collective voice of the industry at EU level.
- ValmexcoreValmex appointed as sales agent in Mexico for Siem Global Logistics (SGL), strengthening commercial presence in the region. The appointment reinforces SIEM's long-term commitment to the Mexican logistics market and adds local sales expertise.
- NavecopacoreSGL and Navecopa have worked together for many years with Navecopa acting as a trusted agent supporting Siem's logistics and cargo operations in Mexico. Navecopa provides stevedoring, warehousing, port operations and cargo consolidation services at key Mexican gateway ports. The expanded partnership was formalised at Breakbulk Americas conference in Houston.
- SeaRoad Shipping Pty LtdminorSeaRoad Shipping is the charterer for MV Liekut operating in Tasmania waters, marking SIEM's first collaboration with SeaRoad. The vessel operates across Bass Strait delivering cargo to Devonport.
- ITOCHU CorporationcoreITOCHU Corporation and Seven Yield Holding established S&I Leasing Pte. Ltd. as a 50/50 joint venture for developing vessel leasing opportunities. The JV has commissioned multiple vessels including BTG Ulriken and BTG APO dry bulk carriers.
- Onorato ArmatoricoreFirst collaboration with Onorato Armatori for delivery of RoRo newbuild MV Alf Pollak under a 12-year bareboat contract. Subsequent delivery of MV Maria Grazia Onorato under 12-year bareboat contract.
- North Atlantic Distribution (NORAD)coreNORAD serves as the processing partner at Port Davisville, handling hundreds of thousands of vehicles before distribution to dealerships across the Northeast. Long-time operational partner supporting SIEM Car Carriers' vessel operations.
- Seven Yield HoldingcoreSeven Yield Holding operates within the Siem Group providing vessel leasing solutions through bareboat charter contracts. The company has commissioned multiple LNG-powered PCTCs and dry bulk carriers through joint ventures.
Scale indicators7 records
Recent moves7 records
Expansion highlights6 records
Siem Shipping competitors and assessment
Company assessmentDirect peers
- Wallenius Wilhelmsen: World's largest finished-vehicle ocean carrier and logistics provider, operating PCTCs and integrated inland distribution. Directly comparable to Siem's combined car-carrier + ship management + NVOCC model.
- Hyundai Glovis: Korean finished-vehicle and CKD logistics provider with deep-sea PCTC tonnage serving Hyundai/Kia and other OEMs. Comparable in PCTC operations and integrated automotive logistics.
- EUKOR Car Carriers: Korea-based PCTC operator majority-owned by Wallenius Wilhelmsen with a large global vehicle-carrier fleet. Comparable on fleet profile and Korean OEM customer base, including Hyundai/Kia.
- UECC (United European Car Carriers): European short-sea and deep-sea RORO/PCTC operator focused on finished vehicle logistics. Comparable in vessel type and customer base, particularly on intra-Europe and transatlantic vehicle flows.
- Höegh Autoliners: Pure-play global PCTC operator with one of the largest finished-vehicle ocean fleets. Closest direct competitor to Siem Car Carriers in Atlantic and deep-sea vehicle transport, sharing similar customer profile of automotive OEMs.
Broad incumbents
- NYK Line (Nippon Yusen Kabushiki Kaisha): Global Japanese shipping group with one of the largest PCTC fleets worldwide. Comparable as a deep-sea finished-vehicle carrier serving Japanese and European OEMs, though within a much broader container, bulk and logistics portfolio.
- K Line (Kawasaki Kisen Kaisha): Japanese shipping conglomerate with significant car-carrier (K-Line Energy & Car Carrier) operations. Overlaps with Siem in PCTC trades serving Asian and European automotive customers.
- Grimaldi Group: Italian shipping group with deep-sea and short-sea RORO operations for vehicles and project cargo. Comparable as a RORO vehicle carrier in Atlantic and Mediterranean trades.
- Mitsui O.S.K. Lines (MOL): Major Japanese ocean carrier operating a large PCTC fleet alongside dry bulk, LNG and container businesses. Comparable on the vehicle-carrier side and in LNG-fuelled newbuilds.
Emerging players
- Sallaum Lines: Independent PCTC operator expanding pure car/truck carrier tonnage globally. Comparable as a niche vehicle carrier competitor, though smaller and newer than Siem's fleet.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
Siem Shipping social profiles
Digital presenceSiem Shipping compliance and trust
Trust signalCompliance9 records
Siem Shipping financial estimates
Financial estimateRevenue estimate
Valuation estimate
Siem Shipping leadership team
Management profileNumber of profiles
Profiles5 records
Siem Shipping subsidiaries and ownership
Company hierarchySubsidiaries5 records
Siem Shipping funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Siem Shipping 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 Siem Shipping
What does Siem Shipping do?
Siem Shipping operates a diversified maritime services platform through five interconnected business lines: Siem Car Carriers (Pure Car and Truck Carrier operations for finished vehicle transport), Siem Offshore (AHTS, PSV, and OSCV offshore support vessels for the energy industry), Siem Ship Management (third-party vessel management including crewing and technical management), Seven Yield (long-term bareboat vessel leasing), and Siem Global Logistics (NVOCC freight forwarding and supply chain services). The company manages a fleet of 30+ owned and chartered vessels including LNG dual-fuel PCTCs.
Is Siem Shipping a public or private company?
Siem Shipping is a private company. It is classified as corporate owned and is currently operating.
When was Siem Shipping founded?
Siem Shipping was founded in -1. It employs 101 to 250 people.
Where is Siem Shipping based?
Siem Shipping is headquartered in Sutton, United Kingdom, in the Europe region.
How does Siem Shipping make money?
Four revenue lines are on record. Vessel Charter Services are the primary driver. The others are ship Management Services, logistics Services and vessel Leasing (Bareboat Charter).
Who are Siem Shipping's main competitors?
Direct peers on record are Wallenius Wilhelmsen, Hyundai Glovis, EUKOR Car Carriers, UECC (United European Car Carriers) and Höegh Autoliners. Broad incumbents are NYK Line (Nippon Yusen Kabushiki Kaisha), K Line (Kawasaki Kisen Kaisha), Grimaldi Group and Mitsui O.S.K. Lines (MOL). Sallaum Lines is listed as an emerging player.
Does Siem Shipping have an API?
No public API is recorded for Siem Shipping.
What industry is Siem Shipping in?
Siem Shipping's product category is Maritime Shipping and Logistics Services. Its primary akta.pro industry code is TLADAJAC, Finished Vehicle Ocean RoRo & Deep-Sea Vehicle Carriers. Its NAICS code is 483111 and its SIC code is 4412.