Publisher
- Adlard Coles Nautical2
- Amberley Publishing1
- CRC Press2
- CRC Press/Balkema1
- Cambridge Scholars Publishing1
- Clarkson Research Studies Clarkson Research Services Limited275
- Coleraine Harbour Commissioners1
- Department for Transport9
- Elsevier1
- Glen Segell1
- HISTORY PRESS1
- Home Office1
- IHS Markit3
- Ipsos1
- KoganPage2
- Londonderry Port and Harbour Commissioners2
- Mercator Media Limited46
- Palgrave Macmillan2
- Routledge6
- Seatrade published in association with Posidonia, The International Shipping Exhibition1