The loan will go towards a new fishing vessel for the company National Fisheries Developments and maintenance of its fleet in Noro.
The IFC's Tom Jacobs said the loan would promote sustainable fishing and employment in the Solomons.
"What we're trying to do with our investment is to promote livelihoods, sustainable livelihoods, for Solomon Islanders and help contribute to the security and sort of equity in the country," Mr Jacobs said.
"And by doing so really help bring some enhanced standards to the operation of the fisheries sector in the country."
