Weymouth were forced to share the spoils with Grimsby following a goalless draw at the Bob Lucas Stadium.
The result sees the Terras remain second from bottom in the Vanarama National League, while the Mariners stay seventh.
Jordan Maguire-Drew had an early chance from close range for Grimsby but Ross Fitzsimons made a good save and John McAtee also came close but his effort from inside of the penalty area flew wide.
Ben Greenwood had a good opportunity for the Terras just before half-time, but his shot smashed off a post.
Grimsby came close to finding the opener twice after the break, but Harry Clifton’s strike was blocked before Luke Waterfall’s header went wide of a post.
Andy Smith had another shout for the Mariners but his shot was cleared off the line by the Weymouth defence.
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