Sportsman Boats Manufacturing in the US announced yesterday that it plans to invest US$3.5m and add another 100 workers to keep up with demand. The South Carolina-based company has expanded twice in the past four years.

The builder, which launched operations in 2011, said it will add 70,000sq ft of production space to its Summerville facility. It will accommodate growth in its upholstery, welding and fabrication operations. It expects its workforce to reach 370.

The company started with six employees in 2011, founded by two former owners of Sea Pro Boats, who had sold their company to Brunswick Corp. It now makes 21 models of saltwater fishing boats from 17ft-31ft LOA. Its dealer base has grown to about 50.

Two years ago, it undertook a US$3.5m expansion, which added 116,000sq ft of space and created 150 jobs. That followed a similar expansion in 2013.

"Sportsman Boats is proud to have roots here in South Carolina and Dorchester County, and we are excited about our continued growth," said Tommy Hancock, co-founder and president, in a statement.