The hull is constructed with a sandwich design consisting of a PVC core with a carbon fibre and vinyl laminate. (see also the Oceanic-Creations spin-off), and its angular design reduces its radar signature (or radar cross section). Its 57 mm cannon barrel can also be folded into the turret to further reduce its cross section.
Much of the design was based on the experiences learned from the experimental ship HMS Smyge. The class was originally designed to be divided into two subcategories where some ships were optimized for surface combat and others for submarine hunting, however this was changed due to cutbacks.
A helicopter hangar was originally planned but was considered to be too cramped and was removed. However, the new navy helicopters Hkp15B (Agusta A109) have been shortened to fit in the projected hangar.
As of yet the only weapon system that has been integrated and tested on the Visby is the gun. Torpedo integration and tests are expected to be carried out during 2008.
|Bow number||Ship name||Laid down||Launched||Commissioned||Service||Status|
|K31||HMS Visby||17 February 1995||8 June 2000||3rd Naval Warfare Flotilla||PTK Visby*|
|K32||HMS Helsingborg||27 June 2003||3rd Naval Warfare Flotilla||PTK Visby*|
|K33||HMS Härnösand||16 December 2004||3rd Naval Warfare Flotilla||PTK Visby*|
|K34||HMS Nyköping||18 August 2005||3rd Naval Warfare Flotilla||PTK Visby*|
|K35||HMS Karlstad||24 August 2006||3rd Naval Warfare Flotilla||PTK Visby*|