HSC Alakai
| Route | Bar Harbor - Yarmouth |
| IMO | 9328912 |
| Building year | 2007 / 2016 |
| Building yard | Austal (#615) |
| Owner | MSC United States Government Dept |
| Operator | Bay Ferries & Northumberland Ferries |
| Length | 106,50 m |
| Breadth | 23,8 m |
| Draft | 3,65 m |
| GT | 8.127 |
| Machinery | 4 x MTU 20V 8000 M70 |
| Speed | 40 kn. |
| Number of passengers | 866 / 700 |
| Number of beds | 0 |
| Number of cars | 282 |
| Lanemetres | ? |
| Port of registry | Honolulu |
| Flag | United States of America |
| Former names | Puerto Rico (2012-2016) - US Navy Alakai (2011-2012) - US Navy Alakai (2010-2011) Alakai (2007-2010) - Hawaii Superferry |
| Former owners | United States Government (2010-2016)
Hawaii Superferry Inc. (2007-2010) |
| Sister ships | Guam, |
| Notes | - |
- HSC Alakai (The Cat)
Photo: Bay Ferries