STCW MLC Crew Work Rest Hours Compliance

ISF Watchkeeper is the global work and rest hour software solution for STCW and MLC 2006 compliance

Manage your crew's rest hours compliance with ISF Watchkeeper

ISF Watchkeeper is the industry standard work and rest hours compliance software, developed in partnership with the International Chamber of Shipping (ICS), helping ship managers across the world easily plan, manage and report their crew’s rest hours compliance in accordance with STCW and MLC regulations and avoid complications with port state control.

Our software suite provides all the tools for calculating seafarers’ rest hours, planning work schedules, and keeping you notified of issues by automatically checking compliance with the STCW, ILO (MLC), US OPA 90 and OCIMF regulations. ISF Watchkeeper is available on a variety of platforms; web, desktop and mobile, securely synchronising your data to the cloud whilst offering unique benchmarking against industry average non-conformance for work and rest hours.

International Chamber of Shipping
vessels use ISF Watchkeeper
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The original and best

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ISF Watchkeeper Desktop

ISF Watchkeeper 3

The original work rest hours solution for Desktop, automating the task of seafarer work and rest hour compliance.

Yacht with Tugs

ISF Watchkeeper 4

The new work and rest hour compliance solution for the yachting and tug sectors; available on web, mobile and tablet.

ISF Watchkeeper Online

ISF Watchkeeper 3 Online

Synchronise fleet data to the Cloud, allowing you to manage alerts, notifications and reports seamlessly, from the shore.

ISF Watchkeeper Mobile

ISF Watchkeeper 4 Mobile

The only mobile app to show live compliance status, allowing real time tracking and testing.

A Proud Heritage

ISF Watchkeeper is a collaboration between the International Chamber of Shipping, and IT Energy, a software development company specialising in software for the maritime industry.

ISF Watchkeeper helps to safeguard your crew and vessels by pro-actively tracking work and rest hour compliance and alerting in advance to issues and potential non-conformities. Serving a global customer base of over 8,500 vessels, ISF Watchkeeper combines the expertise and technical knowhow of the International Chamber of Shipping, and over 20 years of development experience in maritime software.

ISF Watchkeeper is the gold standard work and rest hour solution, as recognised by Port State Control.

International Chamber of Shipping
IT Energy

ISF Watchkeeper is already installed aboard over 8500 vessels, across 62 vessel types and is the only crew work and rest hours software backed by the expertise of the International Chamber of Shipping (ICS), whose members include over 80 percent of the global merchant fleet and who have represented the industry at the International Maritime Organization (IMO) and International Labour Organization (ILO) for more than 50 years.

ISF Watchkeeper complies with the following regulations:


International Convention of Standards of Training, Certification and Watchkeeping for Seafarers, 1978, as amended (IMO STCW)


Maritime Labour Convention, 2006 (MLC)

ILO C180

Seafarers' Hours of Work and the Manning of Ships Convention, 1996 (C180)

OPA 90

The US Oil Pollution Act of 1990 (OPA 90)


Oil Companies International Marine Forum Recommendations Relating to the Application of Requirements Governing Seafarers' Hours of Work and Rest (OCIMF), including the Tanker Management and Self-Assessment (TMSA 3) guidelines and the OCIMF Ship Inspection Report Programme (SIRE 2.0).