Nauticus closes funding round

Nauticus Networks announced Tuesday that it has added an additional $5 million from Advent International in its second round of funding and has closed the round at $26 million. The company makes networking equipment for business data centers and will use the recent funding to expand its sales, marketing and engineering activities.

Advent contributed $1 million last April in the initial closing of the second round, which totaled $21 million. Advent joined other investors in April, including Charles River Ventures, Matrix Partners and North Bridge Venture Partners--the three venture capital firms that also funded the company's $12.5 million first round in February 2001. Framingham, Mass.-based Nauticus has raised more than $38 million since its founding in October 2000.