The 2017-19 War at Sea tournament uses a Swiss Elimination format. There will be five rounds of Swiss play:
Points in the Swiss portion of the tournament will be awarded as follows:
All tournament points are determined by the final POC score after any bid is taken into account. 8-point wins and 5-point draws are only possible if all eight turns of a game have been completed - if a player resigns, he gets 0 points and his opponent gets 10 points regardless of the current POC count.
After five Swiss rounds, the six players with the most points advance to Single Elimination quarterfinals (#3 vs. #6 and #4 vs. #5), semifinals (#1 plays the lower remaining seed and #2 plays the higher remaining seed) and final.