The Sea City Museum, the £15m centrepiece of a new arts complex in Southampton, is due to open in April 2012.
Last year, the Heritage Lottery Fund awarded £4.9m towards the project, but £10m was still needed.
Councillor John Hannides said Southampton City Council would provide £5m match funding for the museum scheme.
The remaining £5m will come from funds raised by the charitable organisation, Southampton Cultural Development Trust, which is seeking £8m over the next three years. In the meantime, the council will cover the extra cost.
The Sea City Museum will house two permanent displays and a gallery for special exhibitions.
Museums Journal September 2010, p4
Last year, the Heritage Lottery Fund awarded £4.9m towards the project, but £10m was still needed.
Councillor John Hannides said Southampton City Council would provide £5m match funding for the museum scheme.
The remaining £5m will come from funds raised by the charitable organisation, Southampton Cultural Development Trust, which is seeking £8m over the next three years. In the meantime, the council will cover the extra cost.
The Sea City Museum will house two permanent displays and a gallery for special exhibitions.
Museums Journal September 2010, p4