How to become a Naval Architect
Plans ships to meet the requirements of shipowner customers at a shipbuilding company, agrees the contract specifications with them, and carries out the whole design process, from designing performance that meets those specifications to producing the production information needed to build the ship.
Main tasks
- Working out the main particulars to meet the shipowner's wishes, such as length, breadth, depth, draught, capacity, speed, main engine output and fuel efficiency, and planning the basic layout and hull form
- Developing hull forms to meet the shipowner's wishes, using computer calculations and simulations and model tests in a towing tank, while analysing propellers and energy-saving hull attachments that improve fuel efficiency and the stability and balance needed for safe sailing
- Writing specifications and signing shipbuilding contracts with customers
- Deciding the main engine, hull form, hold capacity, basic structural layout and sizes of main structural members in basic design, to meet the functions and performance the shipowner requires, such as cargo type, capacity, route and speed
- Producing drawings in basic design, such as key plans, general arrangement plans, accommodation plans and engine room plans
- Putting together the design specification in basic design
- Drawing ship plans in basic design
- Designing the hull structure in detailed design
- Drawing ship structure plans in detailed design
- Designing hull outfitting in detailed design
- Designing machinery outfitting in detailed design
- Designing electrical outfitting in detailed design
- Drawing ship outfitting plans in detailed design
- Producing block division plans, hull construction drawings, fitting drawings, outfitting construction drawings, part data and so on in production design, setting the shapes, processing methods and accuracy of parts for each section based on the basic and detailed design
- Designing small items such as stands and ladders in production design and ordering them made to measure
- Entering the shapes, sizes, types and numbers of parts such as piping in production design, making lists and sending the data to the factory to support production
- Drawing designs with drafting tools such as compasses and dividers, set squares, ship curves and frame curves
- Drawing designs using IT such as 3D CAD systems for initial design, 2D CAD/CAM and 3D CAD/CAM
- Developing energy-saving technology to cut CO2 emissions, such as more fuel-efficient hull forms, energy-saving ducts and other attachments, alternative fuels with lower CO2 emissions than heavy oil, wind power, and hybrid ships and electric propulsion that capture and use solar and other natural energy and waste heat
- Developing ship technology to reduce or reuse CO2, NOx (nitrogen oxides) and SOx (sulphur oxides) for the environment
- Developing technology to improve performance, such as reducing friction and viscous pressure resistance, contra-rotating propellers, reducing wind pressure on superstructures and resistance in waves by improving bow shapes, making hull structures safer and stronger using accident data on hull damage, and ships that can sail in Arctic and Antarctic ice
- Developing technology using computational fluid dynamics (CFD), which simulates the flow of water around the hull by computer analysis
- Developing technology by repeating model tests in towing tanks and similar to make computer simulations more accurate and achieve high performance
Workers in this job say high school or university is common. From job tag's survey of people in each job, who could give several answers. It shows what workers see as common, not how many workers hold each level.
How to become one
The work involves a range of physics calculations and drawing with three-dimensional structures in mind, so most new graduates entering the job have studied science or engineering, such as naval architecture, mechanical and electrical engineering, mechanical engineering, aerospace engineering or ocean systems engineering, at university, postgraduate level or a kosen (college of technology), though high school leavers from shipbuilding, mechanical, electrical and other technical courses are also hired. Mid-career hiring is through Hello Work (public employment service), job advertisements and so on. Mechanical design experience or CAD experience is often required, but sometimes being able to use basic PC software such as Excel, Word and PowerPoint is enough, and some people move from other industries. Once hired, you build a track record while being taught practical work by experienced staff and learning techniques on various courses. Many companies have arrangements to teach people who have never used CAD. There is also a wide range of training: shipbuilding engineer continuing education (basic course and mid-level engineer course) run by the Shipbuilders' Association of Japan's continuing education centre; induction training for new graduates and mid-career hires (mainly those who have not studied shipbuilding), production design training for young staff, naval architecture and ocean engineering training, a future technology development school and courses for the professional engineer exam, run by the skills training centres of the Cooperative Association of Japan Shipbuilders; and a design engineer development package and a maritime data scientist course run by ClassNK (Nippon Kaiji Kyokai). With strong backing from outside bodies as well as your own company, the whole industry is working to develop engineers so that even beginners can build a solid career. On top of this, to use the latest technology to build ships with the latest features, you need up-to-date information and must study what other shipyards are doing and technology trends in related industries. Gaining the Professional Engineer qualification in the marine and ocean field, certified by the Institution of Professional Engineers, Japan, helps your career. If you use CAD, you can prove your skills through the machine and plant drafting skilled worker qualification of the ginou kentei (national trade skills test) set by the Ministry of Health, Labour and Welfare, or the CAD Utilization Engineer exam run by the Association of Computer Aided Design Education. The latest information on regulations is published in English, and communication with overseas customers and specifications are in English, so English skills are essential. A typical career path is a few months of practical training on the production floor after hiring to understand the whole shipbuilding process, then a year of one-to-one guidance from a senior colleague, working with support until the second year. In the third year you are given your main area of responsibility, and by the fifth year you can work as a fully skilled engineer. By age, people typically become mid-level (supervisor) in their 30s, subsection chief in their early 40s and section manager in their late 40s, guiding staff. During this time people move between basic design, detailed design and production design, and some later move to sales or corporate planning. Some go on to manage design and development or become managers of a factory or the whole organisation. Designing and developing ships is project work and teamwork is valued. Many people from different departments and jobs work in a shipyard, and it is essential to cooperate and communicate with them and hand over work accurately as each stage progresses, so coordination, cooperation, a sense of balance, passing on information and communication skills are important. In particular, when a shipowner asks for sudden or difficult changes to the specification, every department must work closely together so the whole organisation can respond quickly. To stay in the job for a long time, it helps to be interested in making things. Ships are built to order, and the work protects quality and customers' trust, so you need to work steadily and be responsible and trustworthy.
Ways in
- University: Engineering degrees, Offered by 95 universities in Japan
- Vocational college, junior college, kosen and trade skills tests: National trade skills test (技能検定). Certified skilled worker (技能士) grades that job tag lists for this job: 機械・プラント製図技能士1級、機械・プラント製図技能士2級. The trade skills tests are national tests set under the Human Resources Development Promotion Act.
- National licence or qualification: Listed by job tag as a qualification related to this job (関連資格): 技術士(船舶・海洋部門). English name and classification by Peernovo.
Pay · Job openings · AI and this job
- Average annual income: ¥7,253,500 Private sector only: employers with 10 or more staff. Public servants, such as public school teachers and police officers, are not in these figures.
- Monthly base pay (before overtime and bonus): median ¥367,400, and the middle half earn ¥293,600 to ¥456,300 a month.
- Pay measured for the wage survey group: Transportation equipment engineers
- 1.93 job openings per applicant at Hello Work (2025). A current demand signal, not a projection. It counts only the jobs and job seekers registered at Hello Work, Japan's public employment offices, and many graduate and professional hires never pass through it.
- Generative AI can do relatively little of this work, by the ILO's global estimate.
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Questions people ask
How do I become a Naval Architect?
The work involves a range of physics calculations and drawing with three-dimensional structures in mind, so most new graduates entering the job have studied science or engineering, such as naval architecture, mechanical and electrical engineering, mechanical engineering, aerospace engineering or ocean systems engineering, at university, postgraduate level or a kosen (college of technology), though high school leavers from shipbuilding, mechanical, electrical and other technical courses are also hired. Mid-career hiring is through Hello Work (public employment service), job advertisements and so on. Mechanical design experience or CAD experience is often required, but sometimes being able to use basic PC software such as Excel, Word and PowerPoint is enough, and some people move from other industries. Once hired, you build a track record while being taught practical work by experienced staff and learning techniques on various courses. Many companies have arrangements to teach people who have never used CAD. There is also a wide range of training: shipbuilding engineer continuing education (basic course and mid-level engineer course) run by the Shipbuilders' Association of Japan's continuing education centre; induction training for new graduates and mid-career hires (mainly those who have not studied shipbuilding), production design training for young staff, naval architecture and ocean engineering training, a future technology development school and courses for the professional engineer exam, run by the skills training centres of the Cooperative Association of Japan Shipbuilders; and a design engineer development package and a maritime data scientist course run by ClassNK (Nippon Kaiji Kyokai). With strong backing from outside bodies as well as your own company, the whole industry is working to develop engineers so that even beginners can build a solid career. On top of this, to use the latest technology to build ships with the latest features, you need up-to-date information and must study what other shipyards are doing and technology trends in related industries. Gaining the Professional Engineer qualification in the marine and ocean field, certified by the Institution of Professional Engineers, Japan, helps your career. If you use CAD, you can prove your skills through the machine and plant drafting skilled worker qualification of the ginou kentei (national trade skills test) set by the Ministry of Health, Labour and Welfare, or the CAD Utilization Engineer exam run by the Association of Computer Aided Design Education. The latest information on regulations is published in English, and communication with overseas customers and specifications are in English, so English skills are essential. A typical career path is a few months of practical training on the production floor after hiring to understand the whole shipbuilding process, then a year of one-to-one guidance from a senior colleague, working with support until the second year. In the third year you are given your main area of responsibility, and by the fifth year you can work as a fully skilled engineer. By age, people typically become mid-level (supervisor) in their 30s, subsection chief in their early 40s and section manager in their late 40s, guiding staff. During this time people move between basic design, detailed design and production design, and some later move to sales or corporate planning. Some go on to manage design and development or become managers of a factory or the whole organisation. Designing and developing ships is project work and teamwork is valued. Many people from different departments and jobs work in a shipyard, and it is essential to cooperate and communicate with them and hand over work accurately as each stage progresses, so coordination, cooperation, a sense of balance, passing on information and communication skills are important. In particular, when a shipowner asks for sudden or difficult changes to the specification, every department must work closely together so the whole organisation can respond quickly. To stay in the job for a long time, it helps to be interested in making things. Ships are built to order, and the work protects quality and customers' trust, so you need to work steadily and be responsible and trustworthy.
How much does a Naval Architect earn in Japan?
Average annual income in the private sector, bonus included, is ¥7,253,500 (Ministry of Health, Labour and Welfare). The figure is for the wage survey group Transportation equipment engineers, which covers several jobs.
Do you need a degree to become a Naval Architect?
Usually. In this job's census occupation group, 70% of workers are university graduates.
Will AI change the work of a Naval Architect?
Generative AI can do relatively little of this work, by the ILO's global estimate.
Sources
- Ministry of Health, Labour and Welfare: Basic Survey on Wage Structure (賃金構造基本統計調査) 2025: earnings by occupation (2025 survey (June 2025 pay, 2024 bonus), published 2026-03-24), Government Standard Terms of Use 2.0, retrieved 4 October 2026
- Ministry of Health, Labour and Welfare: Employment Referrals for General Workers (一般職業紹介状況): Hello Work job-openings-to-applicants ratio by occupation (2025 annual (release of 2026-10-02)), Government Standard Terms of Use 2.0, retrieved 4 October 2026
- Statistics Bureau of Japan (MIC): 2020 Population Census (令和2年国勢調査) detailed sample tabulation: employed by occupation, sex, age and education (2020 Census (tables 9-1 and 15-1, published 2022-12-27)), Government Standard Terms of Use 2.0, retrieved 4 October 2026
- JILPT (職業情報データベース) via MHLW job tag: job tag download data: 解説系 (descriptions, how to become, related qualifications) and 簡易版数値系 (interests, tasks, education) (解説系 ver.7.01 (2026-06-04); 簡易版数値系 ver.7.00 (2026-03-17)), retrieved 4 October 2026
- International Labour Organization, Generative AI and Jobs: A Refined Global Index of Occupational Exposure (ILO Working Paper 140, Gmyrek et al.) (ILO Working Paper 140, May 2025, Annex Table A1), CC BY 4.0, retrieved 4 October 2026
独立行政法人労働政策研究・研修機構(JILPT)作成 職業情報データベース 解説系ダウンロードデータ(IPD_DL_description_7_01.xlsx)ver.7.01 職業情報提供サイト(job tag)より2026年10月4日にダウンロード(https://shigoto.mhlw.go.jp/User/download)を加工して作成
独立行政法人労働政策研究・研修機構(JILPT)作成 職業情報データベース 簡易版数値系ダウンロードデータ(IPD_DL_numeric_7_00.xlsx)ver.7.00 職業情報提供サイト(job tag)より2026年10月4日にダウンロード(https://shigoto.mhlw.go.jp/User/download)を加工して作成
Sources: JILPT Occupational Information Database download data via job tag (解説系 ver.7.01 and 簡易版数値系 ver.7.00, downloaded 4 October 2026), processed by Peernovo; MHLW, Basic Survey on Wage Structure 2025; Statistics Bureau of Japan, 2020 Population Census; MEXT, School Basic Survey 2025; MHLW, Employment Referrals for General Workers (Hello Work statistics). Figures processed by Peernovo. English job names, translations and the matching of jobs to statistical groups, schools and degree fields by Peernovo.
Updated 4 October 2026
