Sherwood Marine Design turns your brief into a compliant, buildable vessel by handling concept development, hull form, stability, structure, systems integration, and production-ready documentation.

Sherwood Marine Design validates your concept with stability calculations, structural analysis, and rule checks against relevant class and flag regulations before you commit to build.

Sherwood Marine Design streamlines fabrication with practical detailing, clear nesting and assembly sequences, and kit-based hull components that reduce rework and yard time.

Sherwood Marine Design supplies 2D drawings, 3D models, CNC-ready cut files, weight and stability books, and compliance reports in standard shipyard-friendly formats.

Sherwood Marine Design offers fixed-price scopes for defined packages and time-based consulting for open-ended work, with schedules matched to your yard dates and approval milestones.

Sherwood Marine Design supports commercial shipyards and professional operators on complex vessels, and also offers high-quality aluminium boat kits for capable DIY builders.

Sterndrive options are listed for each specific design, but send us an enquiry if you don’t see what you are looking for. Sterndrives are generally heavier than the equivalent single outboard, but have the advantage of being available in diesel. If you travel long distances or just like the economy and safety of a diesel it can make a lot of sense. With the current tech common rail turbo engines it is now possible to get a single diesel stern drive for around the same weight as 2 x 4 stroke outboards.

Hard tops are great in cooler weather, but there’s always a point where the windage and weight aloft just becomes too much on a smaller boat. If it’s not shown as an option that’s because it’s generally not a good idea!

We design our boats for a range of horsepower ratings, and for standard outboard engine shaft lengths. Twin set ups are possible on the larger designs, depending on the weight and size of what you want to do. Send us an enquiry.

Ask us! Sometimes there will be a new model in development already to fill that gap, or plans for one.

Of course. It’s almost always possible to have your own customised options. Sometimes there will be added cost, it just depends on the modification. Let us know what you want.

We only supply complete kits – sorry!

Sherwood Marine Design adds the most value from day one by aligning mission needs, regulations, and build methods before costly design changes become necessary.

Sherwood Marine Design typically needs the mission profile, payloads, speed and range targets, regulatory framework, preferred materials, and any yard constraints to kick off efficiently.

Sherwood Marine Design iterates hull form, structure, and systems with rapid trade-off studies so you see the impact of each decision on speed, weight, cost, and rule compliance.

Sherwood Marine Design designs to the target rule set—such as ABS, DNV, Lloyd’s, ISO, or local flag—and manages the technical documentation for approvals.

Sherwood Marine Design delivers shipyard-ready 3D models, part nesting, and CNC cut files to lower fabrication risk and accelerate throughput.

Sherwood Marine Design focuses on workboats, patrol and utility craft, passenger and tourism vessels, survey and research platforms, and high-quality aluminium recreational designs.

Sherwood Marine Design conducts intact and damaged stability, wind heel, lifting, tow, and load-case assessments with complete stability booklets.

Sherwood Marine Design prepares clarifications, updates calculations, and revises drawings promptly to close out approval queries with minimal schedule impact.

Sherwood Marine Design runs FEA for local and global structure, verifies scantlings, and optimizes details around openings, foundations, and high-load areas.

Sherwood Marine Design develops a basis-of-design and risk assessment, then engages early with authorities to agree on acceptable compliance pathways.

Sherwood Marine Design performs compliance gap analyses and delivers a prioritized action plan to meet applicable standards efficiently.

Sherwood Marine Design compiles calculation notes, drawing registers, material specs, and test procedures in a structured package aligned to the chosen authority.

We provide end-to-end naval architecture and practical marine engineering, including new vessel designs, general consultancy, hull construction kits, vessel modifications and refits, and recreational aluminium boat kits for capable DIY builders. Each service is geared to solve complex vessel design challenges with technical precision, practical shipyard detailing, and clear paths to regulatory compliance.

A typical package covers concept development, rule selection, hull form optimization, structure and scantling verification, intact and damaged stability, weight budgets, and systems integration. The deliverables include^{3D} models, 2D drawings, CNC-ready cut files, bill of materials, and compliance documentation aligned to your class or flag requirements, all coordinated through to streamline approvals and cut build risk.

Yes—expect intact/damaged stability analyses, structural assessment (including FEA where warranted), materials and welding guidance, and documentation tailored to class and flag submissions. By engaging early, we reduce redesigns and schedule slip from regulatory comments, and we close the loop from calculations to final sign-off so your vessel launches compliant and on time.

Hull construction kits provide CNC-cut aluminium plate and parts with unique IDs, tab-and-slot features, and assembly drawings that speed fit-up and limit errors—ideal for both shipyards and skilled DIY builders. You receive nesting, part lists, and clear build sequences that reduce inefficient or difficult shipyard builds, with support and documentation available to keep fabrication moving.

We start with a survey and as-built capture, then assess weight, VCG, stability margins, structure, and rule impacts before issuing a phased work scope. Depending on complexity, design and approvals can run 2–8 weeks, followed by modular installation sequences to minimize downtime—coordinated with clear drawings, test procedures, and approval support.

Defined deliverables (e.g., concept studies, stability books, CNC nesting) are often fixed-price, while open-ended consultancy is billed time-and-materials with transparent reporting; kits are quoted per design with options for customization. We benchmark value through reduced yard hours, first-time-fit rates, fewer RFIs, and predictable approvals—helping you control cost without sacrificing technical precision.

Expect 3D CAD models, 2D production drawings, hydrostatics and stability booklets, structural scantling checks or FEA where needed, weight and center-of-gravity reports, CNC-ready cut files, build sequences, and compliance documentation—each aligned to your rule set and shop workflow to reduce build risk. Sherwood Marine Design provides these deliverables in yard-friendly formats to address complex vessel design challenges, stability, structural, and regulatory compliance from day one.

Look for CNC-cut parts with unique IDs, tab-and-slot alignment, logical assembly sequences, and nesting that minimizes waste while preserving tolerance; verify that drawings match the kit and that QA checks or test assemblies have been performed. Sherwood Marine Design supplies well-labeled aluminium kits with clear references and documentation to make shipyard and DIY builds efficient and precise.

For most yards, DXF/DWG for cutting and drafting, STEP/IGES for 3D exchange, and PDF/CSV for drawings and BOMs ensure compatibility; ensure your CAM toolchain reads layer conventions and that your CAD stack (e.g., AutoCAD, Rhino, SolidWorks, ShipConstructor) can round-trip data without geometry loss. Sherwood Marine Design tailors deliverables to your preferred formats so production can proceed without rework or translation errors.

At minimum, plan for intact and damaged stability, structural verification to the target class or flag, global and local strength checks, preliminary weight budgets, and a documented basis-of-design aligned to regulations; these de-risk approvals and avoid late-stage redesigns. Sherwood Marine Design prioritizes these evaluations early to keep compliance, safety, and schedule under control.

Create a comparison matrix that lists scope, rule set, assumptions, number of design iterations, specific deliverables and formats, build-support policy, approval engagement, schedule, and change-control terms; request sample drawings and a stability book to assess quality. Sherwood Marine Design provides transparent scope definitions and sample packs so you can benchmark value, not just price.

Yes—optimize joint details to your WPS, define module breaks that suit your lifts, add pre-outfitting opportunities, improve part labeling, and lock a clear RFI path so on-floor issues resolve fast; the right detailing shortens fit-up, reduces grinding, and limits rework. Sherwood Marine Design adapts design details to your procedures and equipment to improve throughput without forcing new tools or methods.