海洋支援船市場シェア分析、業界動向と統計、成長予測 2026-2031年

海洋支援船（OSV）市場の規模は、2025年の214億6,000万ドル、2026年の230億8,000万ドルから、2031年には340億9,000万ドルへと拡大し、2026年から2031年にかけて8.11%の年平均成長率（CAGR）に達するとMordor Intelligenceでは予測しています。

従来の石油・ガス掘削事業と加速する洋上風力発電設備の建設需要が重なる一方で、造船所の生産能力の制約や鋼材価格の変動が新造船の供給を抑制しているため、船舶の稼働率は逼迫した状態が続いています。現在、用船者はアンカーハンドリング、海底作業、風力発電所関連の物流業務を切り替えて遂行できる多機能船を好む傾向にあり、船主側も国際海事機関（IMO）の2030年排出ガス規制に対応するため、バッテリーハイブリッドやメタノール対応の推進システムを導入しようと競い合っています。市場にある船舶の船齢中央値は18年と高く、更新需要が強まっています。この状況は、資金力に乏しい運航会社にとっては参入障壁を高める要因となる一方、最新鋭の船隊を保有する企業には価格決定力をもたらしています。したがって、市場における競争力は、単なる船腹量（隻数）ではなく、推進技術、動的位置保持（DP）クラス、そしてデジタル対応能力によって左右されることになります。

本レポートの主なポイント

• 船舶タイプ別では、2025年の海洋支援船（オフショア支援船）市場において、アンカーハンドリング・タグ／アンカーハンドリング・曳航・供給船（AHT/AHTS）が42.4%のシェアを占めました。一方、多目的船、海底建設船、待機船（スタンバイ船）のカテゴリーは、2031年まで年平均成長率（CAGR）9.5%で拡大すると予測されています。
• 用途別では、2025年の海洋支援船市場において、石油・ガス分野が50.9%のシェアを維持しました。対照的に、洋上風力発電分野は2031年までCAGR 15.9%で成長が進む見通しです。
• 地域別では、2025年の海洋支援船（オフショア支援船）市場において北米が33.7%のシェアで首位を占めましたが、アジア太平洋地域は2031年までCAGR 9.1%という最も高い成長率を記録すると予測されています。

船舶タイプ別動向：AHT/AHTSの優位性と多目的船の成長

AHT/AHTS（アンカーハンドリング・タグ／同サプライ船）は、メキシコ湾、北海、西アフリカにおける深海リグの移動需要に牽引され、2025年の海洋支援船（オフショア支援船）市場で42.4%のシェアを占めました。特にTidewater社の船団において、ボラードプル（係船柱牽引力）15,000トン以上の最新鋭船は82%を超える稼働率を記録しました。これに続いたのがPSV（プラットフォーム・サプライ船）で、掘削用流体や物資の輸送を担いました。北海におけるPSVの稼働率は、Equinor社やAker BP社によるプロジェクト展開を背景に、2024年には78%まで上昇しました。

MPSV（多目的支援船）、海底建設船、待機・人員輸送船（スタンバイ・クルーボート）を含む「その他」のカテゴリーは、年平均成長率（CAGR）9.5%で市場全体の成長を上回る見通しです。これは、ウェル・インターベンション（坑井介入作業）、ケーブル敷設、緊急時対応など、多用途に運用可能な資産が船主から高く評価されているためです。Saipem社は2025年、TotalEnergies社のMero-3 FPSO（浮体式生産貯蔵積出設備）設置プロジェクトにMPSV「Constellation III」を投入し、同船のDP-3（自動船位保持システム）および400トンクレーンの能力を実証しました。英国やドイツの海域では、規制によりタービン群から30分以内の距離に専用の安全対策船を配置することが義務付けられており、待機船の需要が拡大しています。Damen社は2024年に「Fast Crew Supplier 2710」を6隻引き渡しました。同船は、波高2.5mまでの海象条件下で26名の技術者を輸送できる能力を備えています。

Offshore Support Vessels Market Analysis by Mordor Intelligence

The Offshore Support Vessels Market size is projected to expand from USD 21.46 billion in 2025 and USD 23.08 billion in 2026 to USD 34.09 billion by 2031, registering a CAGR of 8.11% between 2026 to 2031.

Overlap among legacy oil-and-gas drilling, accelerating offshore-wind build-outs, and a sizable decommissioning backlog keeps vessel utilization tight even as shipyard capacity and volatile steel prices restrain newbuild supply. Charterers now favor multi-role tonnage capable of switching between anchor handling, subsea work, and wind-farm logistics, while owners race to add battery-hybrid and methanol-ready propulsion to satisfy International Maritime Organization 2030 emission limits. The market’s age profile, median 18 years, intensifies replacement demand, heightening barriers for cash-strapped operators but creating pricing power for modern fleets. Competitive dynamics, therefore, hinge on propulsion technology, dynamic-positioning class, and digital-readiness rather than sheer hull count.

Key Report Takeaways

• By vessel type, Anchor Handling Tug/Anchor Handling Towing Supply (AHT/AHTS) units commanded 42.4% of the offshore support vessels market share in 2025; in contrast, the multi-purpose, subsea-construction, and standby-crew category is forecast to grow at a 9.5% CAGR through 2031.
• By application, oil and gas maintained a 50.9% share of the offshore support vessels market size in 2025, whereas offshore wind is advancing at a 15.9% CAGR to 2031.
• By geography, North America led with 33.7% offshore support vessels market share in 2025, while Asia-Pacific is poised for the fastest 9.1% CAGR to 2031.

Note: Market size and forecast figures in this report are generated using Mordor Intelligence’s proprietary estimation framework, updated with the latest available data and insights as of January 2026.

Global Offshore Support Vessels Market Trends and Insights

Drivers Impact Analysis*

Up-cycle in Offshore E&P CAPEX

Offshore exploration budgets rebounded in 2024-2025 as operators sanctioned projects deferred during the 2020 downturn, supporting the offshore support vessels market. Chevron allocated USD 7 billion for Gulf of Mexico tie-backs set to commence in 2026, while ExxonMobil approved the Hammerhead field in Guyana in early 2025, both programs requiring sustained AHT/AHTS and PSV support.[1] Shell’s Bonga North development in Nigeria and BW Energy’s Maromba campaign in Brazil exemplify geographic breadth. Rig utilization climbed to 88% by mid-2024, pushing DP-2 day rates beyond USD 25,000 in the North Sea. Vessel owners with young, high-specification fleets are therefore positioned to capture full-rate contracts, whereas aging tonnage faces cold-stacking.

Accelerating Offshore Wind Installations

European and Asian developers are commissioning gigawatt-scale arrays that are strengthening the offshore support vessels market by relying on specialized service-operation vessels, cable-lay support, and crew-transfer units. Cadeler secured a USD 500 million award in 2025 for Ørsted’s Hornsea 3 project, deploying installation tonnage plus standby and supply craft. China added 6 GW of offshore wind in 2024, raising crew-transfer utilization above 80% in coastal provinces.[2] U.S. Bureau of Ocean Energy Management approval for Empire Wind and Sunrise Wind in 2024 opened a Jones Act–Act-constrained market where compliant vessels command day rates exceeding USD 50,000.[3] These projects require DP-2 or higher capability, large deck areas, and walk-to-work gangways, prompting newbuild orders from Damen and Ulstein.

Aging Fleet Renewal & Green Retrofit Demand

Median fleet age reached 18 years in 2024, spurring investment in methanol dual-fuel and battery-hybrid systems across the offshore support vessels market. Eidesvik converted two PSVs in 2025, cutting carbon intensity by 80% and securing long-term Equinor charters with sustainability-linked pricing. Maersk Supply Service invested USD 45 million in hybrid retrofits across four anchor handlers in 2024, trimming fuel burn by 20% during DP operations.[4] Owners unwilling or unable to finance upgrades accelerated scrapping, tightening effective supply, and supporting rate recovery even as nominal hull counts decline.

Data-Driven OPEX Optimization

Predictive analytics is lowering downtime and fuel costs across the offshore support vessels market. Bureau Veritas launched a digital-twin platform in 2024 that schedules maintenance during port calls, avoiding offshore breakdowns. Norwegian firm Seavium reported 12% fuel savings across eight PSVs by optimizing trim and routing. Bourbon connected 30 vessels to an IoT backbone in 2025, predicting failures 72 hours in advance and cutting maintenance expense 18% year over year. Adoption started in the North Sea and Gulf of Mexico fleets but is spreading as charterers mandate digital readiness in tenders.

Restraints Impact Analysis*

High Oil-Price Volatility

Brent swings between USD 70 and USD 90 in 2024-2025, with delayed FIDs for higher-cost fields. TotalEnergies postponed the Begonia project in Angola, idling four PSVs earmarked for the campaign. Tidewater disclosed in Q3 2024 that 12% of its fleet faced contract roll-offs without immediate follow-on work, underscoring sensitivity to price uncertainty. Volatility favors short-cycle shale over multi-year offshore commitments, dampening vessel demand in West Africa and the U.S. Gulf.

Shortage of Experienced Crew

The International Maritime Organization warns of an 89,510-officer shortfall by 2026. Solstad left eight vessels idle in 2024 because it could not source DP operators and chief engineers. Achieving DP Unlimited certification entails 180 days of sea time plus coursework, creating a two-year training pipeline. Acute deficits in the Asia-Pacific force operators to import European crew at premium wages, squeezing margins.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Segment Analysis

By Vessel Type: AHT/AHTS Dominance Meets Multi-Purpose Growth

AHT/AHTS units secured 42.4% offshore support vessels market share in 2025, driven by deepwater rig moves in the Gulf of Mexico, North Sea, and West Africa, with modern ≥ 15,000 bollard-pull vessels running above 82% utilization at Tidewater’s fleet hub. Platform Supply Vessels (PSVs) followed, supporting logistics for drilling fluids and provisions; North Sea PSV utilization climbed to 78% in 2024 on the back of Equinor and Aker BP campaigns.

The “Other Types” cluster, multi-purpose support vessels (MPSVs), subsea-construction units, and standby-crew boats, will outpace headline growth at 9.5% CAGR as owners value assets that pivot between well intervention, cable-lay, and emergency response. Saipem deployed the Constellation III MPSV in 2025 to TotalEnergies’ Mero-3 FPSO installation, showcasing DP-3 and 400-ton crane capability. Regulatory mandates in the U.K. and German waters now require dedicated safety vessels within 30 minutes of turbine arrays, expanding demand for standby craft. Damen delivered six Fast Crew Supplier 2710 units in 2024, each moving 26 technicians in sea states up to 2.5 m.

By Application: Oil and Gas Anchors While Wind Accelerates

Oil and gas retained 50.9% of the offshore support vessels market size in 2025, buoyed by Petrobras’ 62-vessel charter portfolio in Brazil’s pre-salt Santos Basin and Chevron’s Anchor project in the Gulf of Mexico. Decommissioning also underpins demand: the U.K. regulator estimates 2,000 wells and 500 platforms require abandonment by 2030, necessitating heavy-lift and plug-and-abandonment support.

Offshore wind, however, is the fastest-growing application, expanding at a 15.9% CAGR. Ørsted’s Hornsea 3 alone contracted 12 service-operation vessels and eight crew-transfer boats for a 25-year operations phase. U.S. wind build-out along the Atlantic seaboard is capacity-constrained by the Jones Act, encouraging domestic yards to invest despite 36-month delivery lead times. Emerging niches include subsea mining and offshore aquaculture, where Norway’s Loke Marine commenced a two-year seabed-sampling charter in 2025.

Complete Report Scope:

• By Vessel Type
  • Anchor Handling Tug/Anchor Handling Towing Supply Vessels (AHT/AHTSs)
  • Platform Supply Vessels (PSV)
  • Other Types (MPSV, Subsea, Standy Crew)
• By Application
  • Offshore Oil and Gas
  • Offshore Wind
  • Offshore Decommissioning
  • Other Applications
• By Geography
  • North America
    • United States
    • Canada
    • Mexico
  • Europe
    • United Kingdom
    • Norway
    • Germany
    • France
    • Italy
    • Russia
    • Rest of Europe
  • Asia-Pacific
    • China
    • India
    • Japan
    • South Korea
    • ASEAN Countries
    • Australia and New Zealand
    • Rest of Asia-Pacific
  • South America
    • Brazil
    • Argentina
    • Chile
    • Rest of South America
  • Middle East and Africa
    • Saudi Arabia
    • United Arab Emirates
    • Qatar
    • Nigeria
    • Angola
    • Rest of Middle East and Africa

Geography Analysis

North America held 33.7% of the offshore support vessels market share in 2025, propelled by 22 active Gulf of Mexico rigs and early-stage U.S. wind projects. The Jones Act limits mean only 12 compliant service-operation vessels are available for a 30-GW Atlantic pipeline, sending charter rates north of USD 50,000 per day and prompting new orders at Gulf Coast yards despite extended delivery slots. Canada’s Bay du Nord project, sanctioned in 2025, will need six DP-2 PSVs and two AHTS units from 2028.

Europe combines North Sea drilling intensity with the world’s largest installed offshore wind base. Ørsted’s Hornsea 3 and RWE’s Sofia projects together locked in 20 service-operation vessels through 2050, guaranteeing long-duration revenue streams for Cadeler and Seaway 7. Germany cleared 4 GW of new wind capacity in 2024, spurring cable-lay demand. Norway spudded 15 exploration wells in 2024, the highest since 2019, keeping Stavanger-based AHTS utilization above 80%.

Asia-Pacific will post a 9.1% CAGR to 2031, fueled by China’s target of 100 GW offshore wind by 2030 and India’s Krishna-Godavari deepwater program. China installed 6.3 GW in 2024, driving crew-transfer utilization beyond 85% in coastal bases such as Yangjiang. India’s ONGC drilled eight deepwater wells in 2024, chartering DP-2 PSVs from Singapore and Malaysia. Australia’s Star of the South wind farm, approved in 2024, will require six service-operation vessels from 2028.

Competitive Landscape

Market concentration remains moderate: the top five operators, Tidewater, Bourbon, Maersk Supply Service, Seacor Marine, and Edison Chouest Offshore, hold roughly 35% of global capacity, leaving regional specialists room to maneuver. Technology and environmental credentials now trump raw fleet size. Tidewater’s USD 180 million purchase of 12 modern PSVs from Swire Pacific in 2024 allowed the retirement of older hulls and the immediate charter of DP-2 tonnage into Asia-Pacific wind campaigns. Maersk Supply Service’s USD 45 million hybrid-retrofit program secured sustainability-linked charters with Equinor at premium rates.

Digital advantage is another differentiator. Bourbon’s predictive-maintenance suite delivered 22% downtime reduction and 98% availability guarantees, an edge where rig delays cost operators USD 500,000 daily. Solstad carved out a niche in construction support with a 10-year DP-3 contract for the Normand Maximus, one of only eight comparable units worldwide. Disruptors such as Cadeler channel wind-specific equity, USD 600 million raised in 2024, into next-generation turbine-installation vessels, lifting competitive pressure on oil-centric incumbents.

Recent Industry Developments

• January 2026: DOF, a Norwegian offshore vessel owner, has clinched a significant long-term contract in Brazil, sealing a four-year deal with Petrobras for its ROV support vessel, Skandi Commander. The Oslo-listed firm highlighted that this award comes on the heels of a competitive tender process, which previously netted them six similar four-year RSV contracts. Slated to commence in January 2027, the new contract boasts an estimated value of approximately USD 150 million.
• January 2026: Acta Marine has taken delivery of Acta Pegasus, the first of four new vessels, from Tersan Shipyard’s Yalova Premises. Designed to accommodate 135 individuals, Acta Pegasus boasts cutting-edge offshore access and lifting technologies, featuring a 3D motion-compensated SMST gangway and a 3D-compensated crane. True to Acta Marine’s commitment to sustainability, Acta Pegasus comes methanol-ready, paving the way for reduced-emission operations in the offshore sector.
• December 2025: Sea1 Offshore, a Norwegian provider of offshore services, has commenced steel cutting for the second of four offshore energy support vessels (OESVs) at a shipyard in China.
• November 2025: Windcat inked a deal with Damen Shipyards Group for a new Multi-Purpose Accommodation Support Vessel (MP-ASV), also securing the option for five more. Dubbed the Innovation Series, these vessels will feature a spacious open deck paired with a subsea crane, all while prioritizing fuel efficiency and providing top-notch accommodations for personnel in the offshore energy sector.

List of Companies Covered in this Report:

• Bourbon Corporation SA
• Maersk Supply Service AS
• Seacor Marine Holdings Inc.
• Edison Chouest Offshore LLC
• Swire Pacific Limited
• Tidewater Inc.
• Harvey Gulf International Marine LLC
• Solstad Offshore ASA
• Hornbeck Offshore Services Inc.
• PACC Offshore Services Holdings Ltd.
• DOF Group ASA
• Vroon Offshore Services BV
• Siem Offshore Inc.
• Havila Shipping ASA
• Eidesvik Offshore ASA
• Vallianz Holdings Limited
• Companhia Brasileira de Offshore (CBO)
• Zakher Marine International
• Damen Shipyards Group
• Deep Sea Supply Plc

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support

Table of Contents

1 Introduction
1.1 Study Assumptions & Market Definition
1.2 Scope of the Study

2 Research Methodology

3 Executive Summary

4 Market Landscape
4.1 Market Overview
4.2 Market Drivers
4.2.1 Up-cycle in offshore E&P CAPEX
4.2.2 Accelerating offshore wind installations
4.2.3 Stricter decommissioning mandates
4.2.4 Surge in floating production systems (FPSO, FLNG)
4.2.5 Ageing fleet renewal & green retrofit demand
4.2.6 Data-driven OPEX optimisation (digital twins, CBM)
4.3 Market Restraints
4.3.1 High oil-price volatility
4.3.2 Capital-intensive newbuild costs
4.3.3 Shortage of experienced crew
4.3.4 Limited yard capacity & high steel prices
4.4 Supply-Chain Analysis
4.5 Regulatory Landscape
4.6 Technological Outlook
4.7 Porter’s Five Forces
4.7.1 Bargaining Power of Suppliers
4.7.2 Bargaining Power of Buyers
4.7.3 Threat of New Entrants
4.7.4 Threat of Substitutes
4.7.5 Intensity of Competitive Rivalry
4.8 Fleet Age & Renewal Analysis
4.9 Investment Analysis

5 Market Size & Growth Forecasts
5.1 By Vessel Type
5.1.1 Anchor Handling Tug/Anchor Handling Towing Supply Vessels (AHT/AHTSs)
5.1.2 Platform Supply Vessels (PSV)
5.1.3 Other Types (MPSV, Subsea, Standy Crew)
5.2 By Application
5.2.1 Offshore Oil and Gas
5.2.2 Offshore Wind
5.2.3 Offshore Decommissioning
5.2.4 Other Applications
5.3 By Geography
5.3.1 North America
5.3.1.1 United States
5.3.1.2 Canada
5.3.1.3 Mexico
5.3.2 Europe
5.3.2.1 United Kingdom
5.3.2.2 Norway
5.3.2.3 Germany
5.3.2.4 France
5.3.2.5 Italy
5.3.2.6 Russia
5.3.2.7 Rest of Europe
5.3.3 Asia-Pacific
5.3.3.1 China
5.3.3.2 India
5.3.3.3 Japan
5.3.3.4 South Korea
5.3.3.5 ASEAN Countries
5.3.3.6 Australia and New Zealand
5.3.3.7 Rest of Asia-Pacific
5.3.4 South America
5.3.4.1 Brazil
5.3.4.2 Argentina
5.3.4.3 Chile
5.3.4.4 Rest of South America
5.3.5 Middle East and Africa
5.3.5.1 Saudi Arabia
5.3.5.2 United Arab Emirates
5.3.5.3 Qatar
5.3.5.4 Nigeria
5.3.5.5 Angola
5.3.5.6 Rest of Middle East and Africa

6 Competitive Landscape
6.1 Market Concentration
6.2 Strategic Moves (M&A, Partnerships, PPAs)
6.3 Market Share Analysis (Market Rank/Share for key companies)
6.4 Company Profiles (includes Global level Overview, Market level overview, Core Segments, Financials as available, Strategic Information, Products & Services, and Recent Developments)
6.4.1 Bourbon Corporation SA
6.4.2 Maersk Supply Service AS
6.4.3 Seacor Marine Holdings Inc.
6.4.4 Edison Chouest Offshore LLC
6.4.5 Swire Pacific Limited
6.4.6 Tidewater Inc.
6.4.7 Harvey Gulf International Marine LLC
6.4.8 Solstad Offshore ASA
6.4.9 Hornbeck Offshore Services Inc.
6.4.10 PACC Offshore Services Holdings Ltd.
6.4.11 DOF Group ASA
6.4.12 Vroon Offshore Services BV
6.4.13 Siem Offshore Inc.
6.4.14 Havila Shipping ASA
6.4.15 Eidesvik Offshore ASA
6.4.16 Vallianz Holdings Limited
6.4.17 Companhia Brasileira de Offshore (CBO)
6.4.18 Zakher Marine International
6.4.19 Damen Shipyards Group
6.4.20 Deep Sea Supply Plc

7 Market Opportunities & Future Outlook
7.1 White-space & Unmet-Need Assessment

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