| Address | Stena HouseHolyheadAnglesey, Gwynedd LL 65 1DQUnited Kingdom |
| Port Authority | Stena Line Ports Ltd |
| Phone | 44 1407 606666 |
| Fax | 44 1407 606659 |
| - | |
| Coordinates | 53°16'17" N, -4°-37'-1" W |
| Decimal | 53.2714574,-4.6170044 |
| UN/LOCODE | GBHLY |
| Port Type | Harbor |
| Port Size | Small |
| Website | - |
| Terminal | Unavailable |
| Region | Irish Sea |
| Inland port | Unavailable |
| Mean tide | 4 feet m |
| Tide | Unavailable |
| Overhead Limit | Unavailable |
| Swell | Unavailable |
| Channel | 26 - 30 feet 7.1 - 9.1 meters |
| Cargo Pier | 11 - 15 feet 3.4 - 4.6 meters |
| Mean Tide | 4 feet |
| Anchorage | 16 - 20 feet 4.9 - 6.1 meters |
| Harbor Size | Small |
| Shelter | Good |
| Max Vessel Size | Up to 500 feet in length |
| Harbor Type | Coastal Breakwater |
| Compulsory | Available |
| Available | Available |
| Advisable | Available |
| Local Assist | Unavailable |
| Provisions | Available |
| Fuel Oil | Available |
| Deck | Available |
| Water | Available |
| Diesel Oil | Available |
| Engine | Available |
| 0-24 Ton Lifts | Available |
| 25-49 Ton Lifts | Available |
| 50-100 Ton Lifts | Unavailable |
| 100+ Ton Lifts | Unavailable |
| Fixed Cranes | Available |
| Mobile Cranes | Available |
| Floating Cranes | Unavailable |
| Wharves | Available |
| Med Moor | Unavailable |
| Ice | Unavailable |
| Anchor | Unavailable |
| Beach | Unavailable |
| Assist | Available |
| Salvage | Unavailable |
| Pratique | Available |
| Deratt Cert | Available |
| Longshore | Unavailable |
| Electrical Repair | Available |
| Steam | Unavailable |
| Electrical | Available |
| Navigation Eq | Unavailable |
| Ship Repairs | Moderate |
| Degauss | - |
| Drydock Size | Small |
| Garbage Disposal | Unavailable |
| Dirty Ballast | Available |
| Telephone | Available |
| Radio | Available |
| Air | Available |
| Telegraph | Available |
| Radio Tel | Available |
| Rail | Available |