Category: Notices to Mariners

Aid to Navigation Starboard No C3 Q.G is now on its appropriate position.

53°­ 07’.25 N 004° 23’.87 W

David John O’Neill
Caernarfon Harbour Master

Mariners are advised that the the Swelly Rock South Cardinal is now lit.

53°13’.16N – 04°10’.45W

Mariners are advised that this notice hereby replaces Notice 01/2021

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master

Aid to Navigation Starboard No C9 (Y Felinheli) Fl(3).G 10s is now on its charted position.

53°10’.70 N 004°13’.86 W

Mariners are advised that this notice hereby replaces Notice 02/2021.

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master

Aid to navigation Starboard No C9 ( Y Felinheli) Fl(3).G 10s is off station.

Position: 53 10’.70 N 004 13’.86 W

Mariners are advised to navigate with caution in this area.

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master

Mariners are advised that the the Swelly Rock South Cardinal is unlit.

Position: 53º 13’.16N – 04º 10’.45W

Mariners are advised to navigate with caution in this area.

David John O’Neill
Harbwr Feistr Caernarfon Harbour Master

All mariners are advised that the netting underneath the Conwy Road Bridge is loose and hanging down. Please navigate with caution.

Matthew Forbes
MSc LLB (hons) BSc MNI
Conwy Harbour Master

Discontinuation of the Differential GPS Service

The General Lighthouse Authorities are planning to shut down the Differential Global Positioning System (DGPS) from 31st March 2022. The DGPS service is a land-based enhancement to GPS which was designed to increase the accuracy of the system during the period when an intentional location error was introduced into GPS to make it less accurate. This error was removed in 2000.

Please click here to read the full notice on the Trinity House website.

Dredging operations are due to commence in Deganwy Marina on the 1st of October 2020.  A cancellation notice will be issued upon completion of dredging operations.

Matthew Forbes
MSc LLB (hons) BSc MNI
Conwy Harbour Master

Mariners are advised that a significant danger to navigation exists in the area noted below and possible the wider area both Northeast and Southwest given the anchor line may fail at any time. A submerged vessel is believed to still be in position:

53° 13.113′ N 004° 10.660′ W

Mariners are advised to navigate with extreme caution throughout the Harbour Limits until the vessels location and security can be established.

David John O’Neill
Caernarfon Harbour Master

Harbour Masters General Direction

5 knot speed limit

By virtue of the provisions of Sec. 52 Harbour, Docks and Piers Clauses Act 1847, Port and harbour of Caernarfon Harbour Master has made the following General Direction:

1. This Direction is given to Masters ¹ and persons having command or charge of any vessel ² other than those vessels listed in paragraph 4(i) to 4(v)
2. This Direction applies at all times and in the area north of the existing and active speed limit at Y Felinheli. (Now known as the “Y Felinheli to Garreg Ginnog” Area of General Direction). The “Y Felinheli to Garreg Ginnog” means the area below the level of mean high water spring tides bounded by a line drawn along the northern extent of the existing charted speed limit at Y Felinheli and through to a new line drawn from a point 53 ̊12. 30’N 004 ̊12. 44’W to a point 53 ̊12. 40’ N 044 ̊12. 82’W. (Illustrative chart extract at end of NtoM).
3. At the Northern and Southern extent of the entire speed limit. Special Marks will be positioned to demark the area.
4. This Direction is not given to Masters and persons having command
   or charge of vessels:
   • (i) used by search and rescue organisations
   • (ii) of the Caernarfon Harbour Authority
   • (iii) of HM Customs and Excise
   • (iv) used in Commercial operations.
   • (v) used as safety boats by Yacht and Sailing Clubs and other such organisations when engaged in operations where complying with this Direction would inhibit their ability to fulfil their function as a safety boat
5. No vessel, except those listed in paragraphs 3(i) to 3(v), shall proceed at a speed of greater than 5 knots through the water.
6. This Direction is given notwithstanding the requirements of the International Regulations for Preventing Collisions at Sea ³ and The Port and Harbour of Caernarfon Bylaws 1991 ⁴.
7. Not to comply with this Direction is a criminal offence for which the person having command or charge of the vessel may be prosecuted ⁵.
8. The Harbour Master or his deputies will be actively monitoring the compliance with this General Directive.

David John O’Neill
Caernarfon Harbour Master

¹ Sec.3 Harbour, Docks and Pier Clauses Act 1847

² As defined in the Port and Harbour of Caernarfon Bylaws 1991.

³ Merchant Shipping (Distress Signals and Prevention of Collisions) Regulations 1996 [SI 75/1996]

⁴ Port and Harbour of Caernarfon Bylaws 1991.

⁵ Sec.3 and Sec.53 Harbour, Docks and Piers Clauses Act 1847

Owners, Agents Charterers, Marinas, Yacht Clubs and Recreational Sailing Organisations should ensure that the contents of this Notice are made known to the master or persons in charge of their vessel or craft.