# OS - Ordinary Seaman Exam — Practice Test Geeks
# https://practicetestgeeks.com/llms/os-ordinary-seaman-exam.txt
# Updated: 2026-06-03

> Free OS - Ordinary Seaman Exam practice tests and study guides. Free How to Pass the Ordinary Seaman practice test with questions and answer explanations. Prepare for the 2026 May exam with instant scoring. Language: English. Region: US.

## Overview

- **Category**: OS - Ordinary Seaman Exam
- **Main page**: https://practicetestgeeks.com/ordinary-seaman-exam
- **Language**: English | **Region**: US
- **Practice tests**: 21 tests, 141 questions total
- **Exam simulation**: Full-length 50-question timed exam (60 min, 70% pass mark)
- **Study guides / articles**: 2 published

## Exam Simulations (Full-Length, Timed, Scored)

Simulates real exam conditions: question count, time limit, passing score, domain weighting.

- [Ordinary Seaman (OS) Endorsement Exam](https://practicetestgeeks.com/os/exam) — 50 questions, 60 min, 70% pass
  The Ordinary Seaman (OS) exam certifies an individual's basic knowledge and skills required to work as an Ordinary Seaman on a vessel.

## Practice Tests (21 available)

- [Free OS Ship Handling and Mooring Operations Questions and Answers](https://practicetestgeeks.com/free-os-ship-handling-and-mooring-operations-questions-and-answers) (9 questions)
- [Free OS Deck Operations and Maintenance Questions and Answers](https://practicetestgeeks.com/free-os-deck-operations-and-maintenance-questions-and-answers) (9 questions)
- [Free OS Safety and Emergency Procedures Questions and Answers](https://practicetestgeeks.com/free-os-safety-and-emergency-procedures-questions-and-answers) (9 questions)
- [Free OS Navigation and Watchkeeping Questions and Answers](https://practicetestgeeks.com/free-os-navigation-and-watchkeeping-questions-and-answers) (9 questions)
- [OS Fire Fighting and Fire Prevention 2](https://practicetestgeeks.com/os/questions/fire-fighting-and-fire-prevention-2) (7 questions)
- [OS Fire Fighting and Fire Prevention 3](https://practicetestgeeks.com/os/questions/fire-fighting-and-fire-prevention-3) (7 questions)
- [OS Fire Fighting and Fire Prevention 1](https://practicetestgeeks.com/os/questions/fire-fighting-and-fire-prevention) (7 questions)
- [OS Material Selection](https://practicetestgeeks.com/os-material-selection-practice-test) (6 questions)
- [OS OS Cargo Handling and Stowage 2](https://practicetestgeeks.com/os-os-cargo-handling-and-stowage-2-practice-test) (6 questions)
- [OS OS Cargo Handling and Stowage 3](https://practicetestgeeks.com/os-os-cargo-handling-and-stowage-3-practice-test) (6 questions)
- [OS OS Seamanship and Rigging 2](https://practicetestgeeks.com/os-os-seamanship-and-rigging-2-practice-test) (6 questions)
- [OS Environmental Standards](https://practicetestgeeks.com/os-environmental-standards-practice-test) (6 questions)
- [OS OS Cargo Handling and Stowage 1](https://practicetestgeeks.com/os-os-cargo-handling-and-stowage-practice-test) (6 questions)
- [OS OS Seamanship and Rigging 1](https://practicetestgeeks.com/os-os-seamanship-and-rigging-practice-test) (6 questions)
- [OS OS Seamanship and Rigging 3](https://practicetestgeeks.com/os-os-seamanship-and-rigging-3-practice-test) (6 questions)
- [OS Equipment Operation](https://practicetestgeeks.com/os-equipment-operation-practice-test) (6 questions)
- [OS Code Compliance](https://practicetestgeeks.com/os-code-compliance-practice-test) (6 questions)
- [OS Quality Inspection](https://practicetestgeeks.com/os-quality-inspection-practice-test) (6 questions)
- [OS Safety Procedures](https://practicetestgeeks.com/os-safety-procedures-practice-test) (6 questions)
- [OS Technical Measurements](https://practicetestgeeks.com/os-technical-measurements-practice-test) (6 questions)
- [OS Maintenance Protocols](https://practicetestgeeks.com/os-maintenance-protocols-practice-test) (6 questions)

## Articles & Study Guides

- [How to Pass the Ordinary Seaman Exam with Confidence](https://practicetestgeeks.com/ordinary-seaman-exam)

## Reference Pages

- [OS Practice Test PDF (Free Printable 2026)](https://practicetestgeeks.com/os/os-practice-test-pdf)

## About Practice Test Geeks

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