Works will be taking place at the end of this month to the Ross Tiger mast.
Large scaffolding will appear on board the Ross Tiger from Monday 28 September, subject to weather conditions.
The vessel remains closed due to the COVID-19, although maintenance work can still continue to the outside of the ship.
London-based marine civil engineering consultants, Beckett Rankine, will be carrying out a maintenance inspection to the ship’s mast before local marine coatings specialist, Bird and Goodwin, apply new protection to the structure.
The steel decks of the Ross Tiger’s boat deck and whaleback will also receive new marine coatings.
Councillor Callum Procter, portfolio holder for tourism, heritage and culture, said: “Ross Tiger is a crucial part of the offer at Grimsby Fishing Heritage Centre and is a hit with visitors.
“Grimsby Fishing Heritage staff are currently working with their tour guides to develop a virtual tour of the ship that can be delivered to the public inside the main building.
“It is hoped that this can still make the ship accessible to the public while the current situation prevents physical tours from taking place.”
The inspections and repainting works are due to be completed in early October, giving the ship better protection for the coming winter.