IMU CET Scholarship
Log in Register
Free Colour Blindness Test for Merchant Navy (Ishihara) | Sailors Factory
Merchant Navy · Free Screening Tool

Colour Blindness Test for Merchant Navy

Free 15-plate Ishihara screening. DGS allows zero correction for Deck, Engine, ETO & GP Rating — check yours before you spend on coaching.

Start free test FAQs

Quick answer: DGS requires normal colour vision, no correction accepted, for Deck/Engine/ETO/GP Rating candidates. This free 15-plate Ishihara screening gives you an instant self-check before you commit to coaching or fees.

Why Merchant Navy requires this test

Officers read navigation lights, signal flags, and wiring by colour, often at night. DGS makes the Ishihara test mandatory for exactly this reason — zero tolerance, no correction allowed.

This screening15 plates
Official DGS exam38-plate book
Correction allowedNone
Final check byDGS-approved examiner

Take the free test

Free · 15 plates · ~2 minutes
⚠

Ishihara Colour Blindness Screening Test

For DG Shipping Medical Preparation - Sailors Factory

We'll send your group / practice-with-peers link here.
Before you begin:
  • You will get a limited number of seconds per plate.
  • Once you select an answer, it cannot be changed.
  • If a plate shows no clear number to you, choose "Cannot See / Nothing".
  • Do not refresh or leave the page while the test is running.
  • Every attempt shows the plates in a fresh, shuffled order.
Screening only, not a diagnosis. Fail here? Get an official check with any DGS-approved medical examiner before ruling anything out — your institute can usually point you to one nearby.

Why check this first

Before your PCM mattersMedical clearance is checked separately, and earlier.
Bigger filter than IMU CETMore students fail medicals than the entrance exam.
Sponsors check it lateA surprise fail after months of prep wastes time.

See the full Merchant Navy eligibility guide for how this fits the rest of the application.

FAQs

Can a colour blind person join the Merchant Navy?
No, not for Deck, Engine, ETO, or GP Rating — it fails the mandatory DGS medical, regardless of your academic score.
How many plates does this test use?
15, for a quick free self-check. The official DGS exam uses the full 38-plate book.
Is this test free?
Yes — free, instant result, about 2 minutes.
What if I fail?
Not a final diagnosis — get an official check with a DGS-approved medical examiner before assuming you're disqualified. Your institute or DG Shipping's own approved list can point you to one.
Sailors Factory · Merchant Navy admissions guidance & free eligibility tools
IMU CET Scholarship

Middle Class ke chain ko todo.

Be Unconventional, Be a Rebel,

Be a Sailor, Join Merchant Navy

Sailors Factory way

Important

Services

Contact Us

11th Cross, 21st Main, Vanganahalli, HSR 1st Sector, Bengaluru-560102

14a, Parmeshwar Rai Path, Tej Pratap Nagar, Patna, 800002

+(91) 7700830098

support@sailorsfactory.com

About Sailors Factory

Sailors Factory is a Merchant Navy education and preparation platform built by a Bunch of Active Merchant Navy Officers  of Biggest Shipping Companies  with other greatest minds who were once like you to help aspiring seafarers understand, prepare for, and pursue a career at sea.

We provide guidance and preparation resources for students and aspirants exploring Merchant Navy careers, including pathways involving IMU-CET, maritime entrance examinations, company sponsorship preparation, interviews and related career requirements.

Think Merchant Navy, Add Sailors Factory to your Preparation List.

What We Do

Sailors Factory brings Merchant Navy preparation, career guidance and practical learning resources together in one platform. Our approach is designed to help students move beyond simply studying for an examination and understand the complete journey—from checking whether they are eligible for a maritime career to preparing for entrance examinations, sponsorship opportunities and the next stages of their career.

Our platform includes preparation resources, practice and test-based learning, eligibility guidance, career information and mentorship-oriented support to help Merchant Navy aspirants make better-informed decisions. 

Our Focus Areas

Sailors Factory focuses on the areas that matter most to students planning a Merchant Navy career:

  • IMU-CET Preparation — structured preparation and practice for students targeting Indian Maritime University entrance pathways.

  • Merchant Navy Career Guidance — clear information about courses, eligibility, career pathways and the steps involved in entering the maritime industry.

  • Sponsorship Preparation — guidance and preparation for company sponsorship examinations, interviews and related selection processes.

  • Maritime Entrance Preparation — academic practice, mock tests and learning resources designed around the requirements of Merchant Navy aspirants.

  • Eligibility & Career Tools — resources that help students understand whether a particular Merchant Navy pathway is suitable for them before they commit time and money.

  • Maritime Learning — educational content that helps students understand the profession, life at sea and the responsibilities involved in becoming a maritime professional.

What Makes Sailors Factory Different

Merchant Navy preparation is not only about clearing an entrance examination. Students also need to understand eligibility, course selection, sponsorship, interviews, medical requirements and the realities of a career at sea.

Sailors Factory is built around this complete journey.

The platform is led by a team that includes Merchant Navy Officers, MBAs, teachers and trainers, including professionals with extensive teaching experience. The team also brings experience of UPSC Civil Services Mains preparation, maritime careers and student training.

Our goal is simple: help an aspirant make the right decisions before entering the Merchant Navy and prepare systematically for the stages that follow.

Our Mission

Our mission is to make Merchant Navy career preparation more accessible, understandable and systematic for aspiring seafarers across India.

We want students to have access to the information, preparation resources and guidance they need to make informed decisions about a career at sea—and to approach Merchant Navy entrance examinations and sponsorship processes with greater clarity and preparation.

Copyright 2026, SAILORS FACTORY. All Rights Reserved.