John Askey's side earned back-to-back wins for just the second time this season by sealing a league double over the Mariners inspired by Dan Kemp’s hat-trick.
Kemp netted once in the first half before adding his second and third of the game in an eight minute blitz from Pools just after the hour to take the game away from the home side.
Kemp first converted from David Ferguson’s cross in the first half when controlling well before finding the bottom corner.
The MK Dons loanee then kept his composure from 12-yards to restore the lead for Pools after Michee Efete had levelled the scores for the Mariners 10 minutes after the restart.
And Kemp grabbed his hat-trick when finding the bottom corner from Wes McDonald's ball before Josh Umerah added a fourth.
And here is how Pools were rated on a memorable afternoon at Blundell Park:
13. Wes McDonald - 8
John Askey may need a bigger door to batten down from the knocks coming his way. Another huge impact from the bench. Won the penalty, assisted Kemp’s third and generally changed the game. Superb cameo. (Photo: Mark Fletcher | MI News) Photo: Mark Fletcher
14. Oliver Finney - NA
Brought on in the closing stages to see the game out at 1-4. (Photo: Mark Fletcher | MI News) Photo: Mark Fletcher
15. Tom Crawford - NA
Will have enjoyed a run out at 1-4 with the game won for Pools. (Photo: Chris Donnelly | MI News) Photo: Chris Donnelly