HSwMS Uppland (Upd)

For other ships with the same name, see HSwMS Uppland.

HSwMS Uppland (Upd) is one of three Gotland-class submarine built for the Royal Swedish Navy during the Cold War.^[1] The motto of HSwMS Uppland is "Prudencia Et Audacia" which translates into "Prudence And Boldness".

HSwMS Uppland in 2009
History
Sweden
Name	Uppland
Builder	Kockums
Laid down	21 October 1994
Launched	9 February 1996
Commissioned	October 1997
Homeport	Karlskrona, Sweden
Identification	MMSI number: 266114000 Callsign: SDYQ
Motto	Prudentia et audacia ("Prudence And Boldness")
Status	Active in service
Badge
General characteristics
Class and type	Gotland-class submarine
Displacement	1526 tons standard, 1647 tons submerged
Length	60.4 m (198 ft 2 in)
Beam	6.2 m (20 ft 4 in)
Draught	5.6 m (18 ft 4 in)
Propulsion	2 × 1,300 bhp (970 kW) diesel engines 2 × 75 kW Stirling engines 1 × 1,800 shp (1,300 kW) electric motor, one shaft
Speed	10 knots (19 km/h; 12 mph) surfaced 20 knots (37 km/h; 23 mph) submerged
Endurance	over 14 days submerged without snorkeling
Test depth	500 ft (150 m)
Complement	20 officers, 15 enlisted
Armament	4 × 533 mm (21 in) torpedo tubes with 12 torpedoes 2 × 400 mm (15.7 in) torpedo tubes with 6 torpedoes 48 external mines

Mid-life upgrade

In 2020, HSwMS Uppland underwent a mid-life update. During the upgrade, a number of systems that will be used in the next generation submarines, the Blekinge-class (A26), were installed. More than 20 new systems on board the new Gotland-class was implemented, which contributes to their de-risking for the A26.^{[clarification needed]} This also offers training opportunities for the crew when they deploy the A26 in the future.

The upgrade process included many new systems, such as the Stirling AIP, a completely new mast suite, sonars and sensors as well as management and communication systems. In order to accommodate all systems, the submarine has extended to 62 m and gained another 200 tons in weight. In the process HSwMS Uppland reached a displacement (surfaced) of 1580 tons.