Consists of 15 charts of the following scales.

1. St Geoges Channel & Irish Sea, Southern Part 1:500,000.

2. Cardigan Bay - Aberystwyth to Barmouth 1:75,000. with plan of Aberystwyth 1:18,000.

3. St Tudwal's Roads 1:18,000, Mochras Lagoon 1:10,000.

4. Tremadog Bay 1:75,000.

5. Caernarfon Bay 1:75,000 with plan of Porth Dinllaen 1:18,000.

6. Lleyn Peninsula Western Part 1:75,000.

7. Plans in the Northern Part of Cardigan Bay- Approaches to Porthmadog 1:25,000, Porthmadog 1:7,500, Barmouth 1:25,000, Aberdovey 1:25,000.

8. Western Entrance to Menai Strait 1:25,000, Caernarfon to Carrag Ginnog 1:25,000

9. Eastern Entrance to Menai Strait 1:25,000. Ceeeg Ginnog to Bangor 1:25,000, Plan of the Swellies 1:10,000.

10. Holy Island to Red Wharf Bay (North Anglesey) 1:75,000.

11. Approaches to Holyhead 1:25,000

12. Holyhead Harbour 1:6,200,

13. Red Wharf Bay to Colwyn Bay 1:75,000.

14. Approaches to Conwy 1:25,000.

15. Plan Conwy 1:10,000. Plan Pwllheli 1:12,500, Plan The Skerries 1:25,000.