The incident comes just a year after Aberdeenshire Council abandoned plans to axe the night watchman role.
Last year, the local authority revealed it wanted to scrap the nightwatch service in a bid to cut costs.
But there was outrage in the local community and fears were raised it could leave vessels unprotected in the evenings.
Mr Stevenson said the actions of the watchman had made it clear how important retaining the service has been.
Commenting, Stewart Stevenson MSP said:
“It was made clear last year that the removal of the night watchmen would be incredibly detrimental to Macduff harbour.
“The situation involving the man could have had a tragic outcome and the incident highlights why this service is required.
“I would like to commend everyone involved in the incident for their invaluable contribution to keeping the harbour area safe.”
“The situation involving the man could have had a tragic outcome and the incident highlights why this service is required.
“I would like to commend everyone involved in the incident for their invaluable contribution to keeping the harbour area safe.”
A spokeswoman for Aberdeenshire Council said: “We are pleased our team could assist in the rescue at Macduff Harbour.”