HullStudy Sources, Model Scope, and Methodology

Independent educational status

HullStudy is an independent educational project. It is not a shipyard design system, a class-approved technical product, or an official service of KRISO, SIMMAN, IMO, IACS, CadNav, Siemens, HD Hyundai, or any vessel owner, operator, builder, equipment maker, or classification society.

Organization and product names are used only to identify sources, standards, or comparative workflows. Their trademarks remain the property of their respective owners. No endorsement is claimed or implied.

Geometry and information register

Layer	Status	What it supports
Hull surface	Public source geometry, rebuilt for web viewing	KVLCC2 hull form, principal shell regions, underwater shape, and dimensional context.
Propeller and rudder	Public source geometry	Location and relationship of the KVLCC2 propulsor and steering surface.
Deck and superstructure context	Licensed reference asset, modified and re-aligned	Visual density and approximate location of accommodation, deck piping, railings, and fittings.
Double-hull interior	Rules-based educational arrangement	Typical relationships among cargo spaces, ballast spaces, boundaries, and supporting members.
Piping systems	Functional training arrangement	System purpose, component order, segregation, and conceptual routing.
Machinery and electrical	Envelope and routing training arrangement	Equipment relationships, shaft-line order, distribution sequence, and access context.

Exterior geometry method

Source and reconstruction

The public SIMMAN 2020 KVLCC2 IGES benchmark is an open hydrodynamic surface set rather than a production watertight solid. HullStudy intersects that surface at 281 transverse stations and rebuilds a connected, winding-consistent display mesh for stable browser rendering.

Orientation and waterline

The imported source is vertically normalized so deck and bottom orientation match the upright topside context. The displayed design waterline follows the published KVLCC2 design draft of 20.8 m against a published moulded depth of 30 m.

Measured reconstruction deviation

The current source-to-rebuild comparison records a mean surface deviation of 0.46 m and a 95th-percentile deviation of 0.91 m. Those values are suitable for broad visual study but are not production tolerances. Display closing surfaces and semantic overlays are outside source-CAD scope.

Internal arrangement method

No public KVLCC2 production general arrangement, approved midship section, construction drawing, piping diagram, electrical single-line diagram, cable schedule, or as-built model is represented as source data. The internal layer is an educational double-hull VLCC arrangement informed by IMO tanker requirements, IACS structural relationships, published machinery envelopes, and standard marine-system logic.

Spaces: Fifteen main cargo-oil spaces, two aft slop spaces, segregated wing ballast spaces, and double-bottom ballast spaces are shown as a training arrangement.
Structure: Boundary plating, bulkheads, floors, girders, web frames, transverses, longitudinals, brackets, and openings illustrate member relationships rather than approved scantlings.
Systems: Cargo oil, ballast, stripping, inert-gas, cargo-vent, fire-main, shafting, and electrical paths communicate functional sequence and segregation.
Tags and dimensions: Training tags, nominal sizes, envelopes, and example loads support instruction. They are not copied from a yard production database or owner documentation.

Terminology and selection validation

Each glossary card is registered to the same Three.js object group that is displayed as the selected part or space. The translucent highlight clones that registered geometry; it is not an unrelated pick sphere or a hand-entered screen coordinate.

Startup validation checks that every registered term has a non-empty modeled object and that its bounding region satisfies the expected spatial contract. Piping system records also check modeled radius against the registered nominal-diameter scale. If a required group is missing or displaced, initialization stops instead of silently pointing a card at a different object.

Responsible use

Suitable	Not suitable	Use instead
Terminology orientation	Fabrication or repair instruction	Approved construction and repair drawings
Introductory structural relationships	Scantling or strength verification	Applicable class rules and approved calculations
Functional system sequence	Valve operation or cargo planning	Vessel-specific P&IDs, manuals, and procedures
Visual preparation for drawing study	As-built routing or equipment replacement	As-built model, equipment data, and survey records

Attribution and software

The CadNav source hull, source propeller, textures, and branding are excluded from the runtime topside reference. The retained geometry is used as part of the complete educational artwork and is not offered for extraction, resale, or standalone redistribution.

Primary technical references

Privacy and promotion policy

HullStudy uses Vercel Web Analytics and Speed Insights to understand aggregate visits and technical performance. The site does not operate advertising profiles, sell visitor data, require an account, or publish paid rankings. Promotion is limited to accurate search-engine submission, useful educational content, and voluntary sharing by learners and educators.

HullStudy does not buy backlinks, post automated forum comments, scrape contact lists, send unsolicited bulk messages, imitate organizations, or conceal sponsorship. Any future partnership or sponsored material should be disclosed beside the relevant content.