| ICSA/Gill Coed Dinghy Nationals | Stanford | National Championship Finals | 2 Divisions | | Official | 5/18 |
| ICSA Women's Nationals | Stanford | National Championship Finals | 2 Divisions | | Official | 3/18 |
| ICSA Women's Semi-Final | Stanford | National Championship Finals | 2 Divisions | | Official | 5/18 |
| ICSA Western Semifinals | Harvard | National Championship Finals | 2 Divisions | | Official | 2/18 |
| 80th Boston DinghyCup | MIT | NOT ALLOWED In-Conference | 3 Divisions | | Official | 8/18 |
| Women's | St. Mary's | NOT ALLOWED In-Conference | 2 Divisions | | Official | 6/18 |