CSI Marine
1985 SE Airport Road
Stuart, FL 34996
Ph: 800.454.4245
Fax: 772.403.5043
The CSI Group of Hudson, NH has acquired the tooling and marketing rights for the Sonic brand of boats. The brand has joined with CSI’s Mares line of luxury high-performance powercats to form a new division, CSI Marine.
Sonic USA, a high performance brand with a loyal following for over 25 years, will continue its tradition of offering a high value, comfortable, safe, fast boat line.
Mares Marine is expanding its line of exceptional high performance powercats with offshore center console and fishing boats powered by either outboard or diesel power. 
CSI Group, founded in 1972, is a privately owned diversified manufacturer of infrastructure products and machinery serving the construction, communications, utilities, government and transportation industries. Based in Hudson, NH, CSI Group companies provide a wide range of products and services internationally, including highly-engineered manufactured concrete products, pre-fabricated and electro-mechanically outfitted equipment buildings, material handling systems, premium steel forms and tooling; and, the mobilization of facilities to construct segmental tunnel rings for tunnel projects. CSI Group designs and manufactures superior quality, innovative products for the most demanding applications and environments.