| Event no. | Survey | Photos | Place name | Start Depth m | End Depth | Site number | County |
|---|
| 20210104/01 | 777 | 50 | Ringhaddy Sound, Strangford Lough | | 0.0 | | Down |
| 20210115/01 | 781 | 27 | Carrickfergus Marina | 0.0 | 0.0 | | Antrim |
| 20210117/01 | 777 | 60 | Ballyhenry Island, Strangford Lough | | 0.0 | | Down |
| 20210201/01 | 777 | 43 | SW of Mountstewart, Strangford Lough | | 0.0 | | Down |
| 20210207/01 | 777 | 20 | Granagh Bay, Strangford Lough | | 0.0 | | Down |
| 20210305/01 | 777 | 33 | Greyabbey, Strangford Lough | | 0.0 | | Down |
| 20210416/01 | 777 | 45 | Ballyhenry Island, Strangford Lough | | 0.0 | | Down |
| 20210428/01 | 777 | 50 | The Dorn, Ardkeen, Strangford Lough | | 0.0 | | Down |
| 20210429/01 | 777 | 23 | SW of Mountstewart, Strangford Lough | | 0.0 | | Down |
| 20210513/01 | 777 | 41 | Marlfield Bay, Strangford Lough | | 25.0 | | Down |
| 20210513/02 | 777 | 60 | Ballyhenry Bay, Strangford Lough | | 0.0 | | Down |
| 20210515/01 | 777 | 13 | Duncan's Bo, Rathlin Island | | 30.0 | | Antrim |
| 20210515/02 | 777 | 46 | Ruecallan, Rathlin Island | | 30.0 | | Antrim |
| 20210516/01 | 777 | 37 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210516/02 | 777 | 22 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210525/01 | 777 | 40 | Ballydorn, Strangford Lough | | 0.0 | | Down |
| 20210605/01 | 777 | 59 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210605/02 | 777 | 35 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210606/01 | 777 | 62 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210606/02 | 777 | 31 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210718/01 | 777 | 24 | Skerries, Portrush | | 30.0 | | Antrim |
| 20210809/01 | 777 | 5 | Granagh Bay, Strangford Lough | | 3.0 | | Down |
| 20210810/01 | 777 | 1 | Ballyhenry Island, Strangford Lough | | 0.0 | | Down |
| 20210815/01 | 777 | 40 | Ballyhenry Bay, Strangford Lough | | 5.0 | | Down |
| 20210816/01 | 777 | 36 | Ballyhenry Bay, Strangford Lough | | 5.0 | | Down |
| 20210821/01 | 777 | 39 | Duncan's Bo, Rathlin Island | | 30.0 | | Antrim |
| 20210821/02 | 777 | 24 | Damicornis Bay, Rathlin Island | | 30.0 | | Antrim |
| 20210822/01 | 777 | 28 | off Doon Point, Rathlin Island | | 30.0 | | Antrim |
| 20210822/02 | 777 | 52 | Ruecallan, Rathlin Island | | 30.0 | | Antrim |
| 20210830/01 | 777 | 29 | Ballyhenry Island, Strangford Lough | | 0.0 | | Down |
| 20211016/01 | 777 | 109 | Carrick-a-rede | | 30.0 | | Antrim |
| 20211017/01 | 777 | 40 | Carrick-a-rede | | 30.0 | | Antrim |
| 20211017/02 | 777 | 55 | Wreck of the Lochgarry, Rathlin Island | | 30.0 | | Antrim |
