DocHarbor

Engineer once.Deliver everywhere.

The engineering document platform. Whole packages, from scans to CAD drawings, delivered in another language with the layout intact.

Same page, same layout. EMKA product catalogue, page 6, from our pilot.
The problem

Engineering documents still move by hand

Translating the words is quick. Rebuilding the layout so the package looks like the original is where the days go.

One package

  • Scanned pages
  • Digital PDFs
  • Office files
  • CAD drawings
1

Split the package by format

2

Translate the text

3

Check terms, numbers and codes

4

Rebuild tables, title blocks and drawing labels

5

Re-assemble and submit

Where the time goes: step 4. DocHarbor does it for you.

On the job boards

Contractors hire people just to do this

translate construction drawings, technical documents, site reports and daily office files

CCECC, Zambia · Chinese Translator · posted 2026-06-08

greatzambiajobs.com
translating technical documents, reports, and contracts

CSCEC group, Indonesia · Mandarin Translator, site project · posted 2026-02-11

linkedin.com/posts/cscecindonesia
Drawing translations · Vendor manuals · bilingual document reviews

Turner & Townsend PMC, Indonesia RKEF project · accessed 2026-10-13

jobs.smartrecruiters.com
Pilot files

Same pages, same layout, another language

Files from our pilot workspace, exactly as DocHarbor delivered them. Visual match: each page pair compared with the text blurred out, so it counts what moved (photos, graphics, colour blocks, rules), not which language the words are in.

Measured

The grid lands where it was

Red: the 26 ruling lines of a Chinese register specification. Blue: the same lines in DocHarbor's English output. They sit on top of each other.

Source, 26 linesEnglish output, 26 linesLargest offset under 0.1 pt
15 → 15

Pages in, pages out. Every page break where the source had it.

186 / 186

Ruling lines in place across all 15 pages, within 0.6 pt.

7 → 41

Characters in one cell. English runs longer, so DocHarbor re-wraps it inside the same cell.

Register 6500, source and output

Register 6500 in the Chinese sourceRegister 6500 in English, the description wrapped over three lines in the same cell
Drawings

Every dimension, unchanged

Floor plan with English labels
Original, English
The same floor plan with Chinese labels from DocHarbor
DocHarbor output, Chinese
51

text labels translated

63 / 63

dimension strings identical in text, position and height

806 / 806

geometry entities identical

Public floor plan (skymakerolof/dxf, MIT licence), real DocHarbor output; the Japanese output keeps the same 63 / 63.

The product

Upload, compare, review, deliver

app.docharbor.com
1 · Upload2 · Compare3 · Review4 · Deliver

A working replica of the DocHarbor workspace. Documents, pages and glossary terms are from the pilot workspace; the review item and glossary statuses are product demo data.

Speed

Six documents a minute

6documents
a minute

At that rate, DocHarbor could have delivered 0 documents since you opened this page.

DocHarborTranslation agenciesSite translatorsDeepL, AzureCAT tools
Speed6 documents a minuteSheet by sheet, by handBy handFast, one file at a timeAt translator pace
Whole mixed package in one upload✓Yes✕Split by hand✕Split by hand✕File by file✕One format
CAD drawings, DWG and DXF✓YesRedrawn by handRedrawn by hand✕Not supportedThrough plug-ins
Original layout kept✓99.2% visual matchRebuilt by handRebuilt by handPartly; scans may shiftNot their job
Numbers and units checked✓Per CAD entityProofreadingBy eye✕NoPartly
Review trail✓Source, change, reason✕No✕No✕NoPartly
1,449

completed pilot runs on real engineering files

98.7%

of numbers kept when text inside images is translated

43

CAD drawings through the delivery gate

3.7 min

median machine time per real document

Speed: peak throughput of the current model pool, about 368 documents an hour; measured on one machine with four workers, 167 an hour. Other options: from each one's public documentation and the job ads above, not a head-to-head test. Pilot figures as of Sep 2026.

Engineeringwithout borders.

Chinese contractors build across Africa, Asia and the Middle East. Their documents should cross borders as easily as their engineers do.

The platform

From translation to one engineering platform

Translation is the first module and it is built. Every module after it works on the same documents, in the same workspace.

Built01

Translation

Whole packages, from scans to CAD drawings, delivered in another language with the layout intact.

In progress02

Document control

Every revision of every drawing, controlled across the project: who changed what, and which version is current.

Illustration
In progress03

Drawing to 3D

Engineering drawings turned into 3D models automatically.

Illustration: the public floor plan above, its walls extruded
Roadmap04

Through to simulation

One platform from the first document through to CAE.

Illustration
Who it's for

Built for contractors' overseas offices

● Projects in the job ads above● Singapore, where DocHarbor started

The people who use it

Site translators and document controllers in the overseas project office of a Chinese contractor.

The people who sign off

Project managers, who answer for the quality of every package the office submits.

Why it keeps coming back

Drawings are revised and re-issued many times per project. Every revision goes through DocHarbor again, and document control keeps each version.

Team

Engineers who have done this work

CaibowenFounder, Chief Engineer & CEO

NTU MSc Smart Manufacturing. Has worked upstream and downstream in manufacturing and energy. Built DocHarbor and runs the pilot.

Su ZijieCustomers

MSc Civil Engineering, The Hong Kong Polytechnic University; Hikvision Singapore.

Liu JipengDocument control

PhD candidate, industrial control systems, The Hong Kong Polytechnic University.

Gao HanDrawing to 3D

Aerospace master's student, Northwestern Polytechnical University.

Engineer once.Deliver everywhere.

Engineering without borders.

See it live translate.docharbor.orgFounder alvinsland.com

DocHarbor. Interface screens are a replica of the product; pilot files from the de-identified trial workspace.