Notice to Skippers

Introduction

A Notice to Skippers (NTS) is an official communication issued by a maritime authority, harbourmaster, or other relevant body to inform vessel operators of temporary or permanent changes that affect navigation, safety, security, or environmental protection within a specific area. The term is most common in the United Kingdom and many Commonwealth nations, but similar notices exist worldwide under different names (e.g., NAVTEX alerts, maritime safety information, or boating advisories).

Why Notices to Skippers Exist

The marine environment is dynamic. Tides, currents, weather, construction, dredging, and even wildlife migrations can alter conditions overnight. Authorities issue NTS to ensure that skippers receive timely, reliable information that enables them to make safe navigational decisions.

Typical Content of an NTS

• Location details precise coordinates, landmarks, or area descriptions.
• Effective dates and times when the notice starts and, if applicable, when it ends.
• Nature of the hazard or change e.g., a new buoy, a submerged obstruction, a speed restriction, or a temporary anchorage ban.
• Required actions what the skipper must do (slow down, alter course, avoid an area, etc.).
• Contact information phone numbers or email addresses for further queries.
• Reference numbers for recordkeeping and future correspondence.

How Skippers Receive Notices

Notices are distributed through several channels to maximise reach:

• Marine radio (VHF Channel 16) verbal broadcasts from harbourmasters.
• Maritime Safety Information (MSI) systems e.g., NAVTEX, Inmarsat-C.
• Online portals authority websites often host PDFs or searchable databases.
• Local press and information boards especially for small harbours.
• Mobile apps many national agencies provide dedicated apps that send push alerts.

Legal Standing

An NTS is not merely advisory; it carries legal weight. Failure to comply can lead to:

• Fines or penalties under national maritime law.
• Liability in the event of an incident caused by noncompliance.
• Potential suspension or revocation of vessel licences.

The exact ramifications vary by jurisdiction, but the underlying principle is consistent: safety and environmental protection take precedence over convenience.

Common Types of Notices

Construction and Dredging

When a harbour or channel undergoes works, temporary structures, sediment disposal, or altered depths are common. Skippers need to know new clearance depths and any altered traffic patterns.

Environmental Protection

Areas may be closed to protect marine life during breeding seasons, to limit oil spill damage, or to control invasive species. Speed limits are also used to reduce bowwave impact on vulnerable habitats.

Security Measures

In times of heightened security, authorities may restrict vessel movements, require identification checks, or impose curfews. Notices will detail the measures and any required documentation.

WeatherRelated Alerts

While meteorological warnings are often issued separately, an NTS may be used to advise specific actions such as anchoring in designated safe zones or avoiding certain routes due to extreme wind or wave conditions.

Best Practices for Skippers

1. Check regularly Make it a habit to review the latest NTS before each voyage.
2. Record reference numbers Keep a log of the notices you have read; this aids compliance checks.
3. Verify dates Some notices are timesensitive; doublecheck the effective period.
4. Plan routes accordingly Use the information to adjust your passage plan, avoiding restricted zones.
5. Maintain communication If a notice is unclear, contact the issuing authority promptly.
6. Share with crew Ensure that all relevant crew members are aware of any restrictions that affect their duties.

Sample Notice (for illustration only)

NTS2026045Date: 20260520Issued by: Thames Estuary HarbourmasterLocation: Between Marker 12 and Marker 14, Thames EstuaryEffective: 20260522 0600UTC  20260605 1800UTCDetails: Dredging operations will reduce the depth to 3.5m at low tide.Speed limit: 5kn within the dredge area.Action required: Vessels > 5m draft must avoid the area and use the alternate channel marked on chart 10977.Contact: +442012345678 (Harbourmasters Office)Reference: HMO2026DGT12    

Where to Find Current Notices

Below are a few reputable sources (links open in a new tab):

• UK Harbourmaster Notices
• U.S. NAVTEX / Marine Weather
• New Zealand Maritime Safety Information
• IMO MSI Overview

Conclusion

Notices to Skippers are a cornerstone of safe, responsible navigation. By delivering uptodate information on hazards, restrictions, and environmental considerations, they help protect life, property, and the marine ecosystem. Skippers who treat NTS as an essential part of voyage planning not only stay compliant with the law but also contribute to a safer and more sustainable maritime community.