On 3 September the first of Sweden’s newly upgraded Visby-class guided-missile patrol craft was turned over to the Swedish military after having completed extensive modifications that bring her up to “Level 5” standard. All five units of the class previously were expected to be operational by late 2007, but because of additional delays the decision was made to upgrade the class to enhance safety and performance—and to better support international operations, which often take place far from Swedish waters. The subsequent Level 5 enhancements that are being added to the entire class through 2014 include additional command, control, and communications equipment and antennas; a helicopter landing system; enhanced mine-hunting equipment; and other improvements. The Visby class incorporates numerous advanced measures to reduce its radar, infrared, magnetic, acoustic, visual, laser, and wake signatures. Ships of the class include the Visby, Helsingborg, Härnösand (pictured here), Nykõping, and Karlstad, each of which measure 239 feet and displace more than 600 tons.