The information and tidal stream predictions provided by the Government of the Hong Kong Special Administrative Region ("the Government") on this website ("the Government's information") is for reference only. Whilst the Government endeavours to ensure the accuracy of the Government's information on this site, no express or implied warranty is given by the Government as to the accuracy of the Government's information.

This website also contains information input by other parties and users may link this site to other sites and obtain information provided by other parties (collectively called "the other information"). The Government expressly states that it has not approved nor endorsed the other information contained in or in connection with this site.

The Government does not accept any responsibilities for any loss or damage whatsoever arising from any cause whatsoever in connection with this website. The Government is entitled to delete, suspend or edit all information on this site at any time at its absolute discretion without giving any reason. Users are responsible for making their own assessments of all information contained in or in connection with this site and are advised to verify such information by making reference to its original publication and obtain independent advice before acting on it.

Users are also required to comply with the Terms and Conditions of Use as published on

Web Accessibility Conformance Statement

We are committed to ensuring that our website conforms to the World Wide Web Consortium (W3C) Web Content Accessibility Guidelines (WCAG) 2.0 Level AA requirements to the maximum extent possible. However, as our website contains a considerable amount of multimedia, PDF and Word contents, not all levels of accessibility features have been incorporated. For enquiry, please email us at

Copyright Notice

The information available within this website may be re-disseminated or reproduced, provided that the Marine Department, as the source of information, is acknowledged and that the re-dissemination or reproduction is for non-commercial use. Any other reproduction, adaptation, distribution, dissemination or making available of the information available within this website for commercial use is strictly prohibited unless prior written authorization is obtained from the Marine Department. The Marine Department and the HKSAR Government shall not accept any responsibilities for any loss or damage arising from the information, or reproduction or re-dissemination of the information, within this website.

Privacy Policy

The Hong Kong Hydrographic Office ("HKHO") of the Marine Department ("MD") is concerned to ensure that all personal data submitted through HKHO of MD website are handled in accordance with the relevant provisions of the Personal Data (Privacy) Ordinance.

HKHO of MD will record visits to its website without collecting any personal identifiable information of users. Such general statistics are collected for the compilation of statistical reports and the diagnosis of problems with or concerning computer systems to help HKHO of MD improve its website.

For different purposes and at different times you may be invited to provide personal data to HKHO of MD through its website on a voluntary basis. Personal information may include name, telephone number, mailing address or e-mail address. HKHO of MD will specify the collection purpose and intended usage of your data when it invites you to provide such information and advise you how you may request access to or correction of the personal data provided.

Unless permitted or required by law, HKHO of MD will not disclose your personal data to any third parties without your prior consent.

All personal data you provide to the HKHO of MD via its website are secured, and access to them is restricted to authorised personnel only.

Search service on HKHO of MD website is provided by an independent contractor of the Government. We are advised by the independent contractor that it does not collect personal identifiable information while serving search results through HKHO of MD's website. The independent contractor will share the anonymous data it collects through the search service with HKHO of MD for compiling traffic analysis on its website. HKHO of MD will not match the data obtained from any such search activity with any personal data possibly held by HKHO of MD.