Sachsen class armored frigate
Encyclopedia
The Sachsen class of armored frigates was a class of four ships built by the German Imperial Navy
in the late 1870s to early 1880s. The ships—, , , and —were designed to operate as part of an integrated coastal defense network. The ships were intended to sortie from fortified bases to break up an enemy blockade or landing attempt. Armed with six 26 cm (10.2 in) guns, they were also intended to fight hostile ironclads on relatively equal terms.
Following their commissionings in 1878–1883, the four ships served with the fleet on numerous training exercises and cruises in the 1880s and 1890s. They also participated in several cruises escorting Kaiser Wilhelm II on state visits to Great Britain and to various cities in the Baltic Sea
in the late 1880s and early 1890s. In the late 1890s, the four ships were extensively rebuilt; their secondary batteries were modernized and they received upgraded propulsion systems. They were removed from active duty between 1902 and 1910 and relegated to secondary duties. Sachsen and Bayern became target ships while Württemberg became a torpedo training ship. The three ships were broken up for scrap in 1919–1920. Baden was used as a boom defense hulk
from 1910 to 1920, when she became a target ship. She survived until 1938, when she was sold for scrapping.
as a primary component of an integrated coastal defense system proposed by General Albrecht von Stosch
, the Chief of the Admiralty. Stosch designated the ships Ausfallkorvetten (sortie corvettes), denoting their intended use. In the event of war with a superior naval power and the imposition of a naval blockade, the Sachsen-class ships would sortie from fortified bases to attack the blockaders. They also had the task of breaking up landing attempts. The German railway network linked the bases so ground forces could be transferred to the sites of enemy landings.
Their roles imposed several design limitations on the vessels. The vessels were designed to operate in coastal areas, which required a shallow draft in order for them to be able to enter any port on the Baltic seaboard. They also required a heavy armament, in order for them to be able to engage any hostile ironclad on equal terms. Because Stosch envisioned only local deployments for the vessels, they had limited coal stowage, as they could easily replenish their supply.
The ships of the Sachsen class were 98.2 m (322.2 ft) long overall. They had a beam of 18.4 m (60.4 ft) and a draft of 6.32 m (20.7 ft) forward and 6.53 m (21.4 ft) aft. At the designed displacement
, the vessels displaced 7635 metric tons (7,514.4 LT). When the vessels were fully loaded, they displaced between 7742 MT (7,619.7 LT) and 7938 MT (7,812.6 LT). Their hulls
were built with transverse bulkheads and double longitudinal iron frames; iron plating covered teak
backing. The ships had sixteen watertight compartments and a double bottom
that ran for 60 percent of the length of the hull.
The German navy regarded the ships as poor sea boats, with severe rolling, and a tendency to take on water. The ships had a very small turning radius, however, and were quick to answer commands from the helm. Their standard complement consisted of 32 officers and 285 enlisted men, and while serving as a division flagship, this could be augmented by an additional seven officers and thirty-four sailors. After their reconstruction in the 1890s, the ships' crews were significantly increased, to 33 officers and 344 enlisted men, and later to 35 officers and 401 enlisted men. The ships carried a number of smaller boats, including one picket boat, one launch
, one pinnace
, two cutters, one yawl
, and one dinghy
.
The four ships were powered by two 3-cylinder single expansion engines. The ships' engines drove a pair of four-bladed screws that were 5 m (16.4 ft) in diameter. The engines were supplied with steam by eight coal-fired trunk boilers. The eight boilers were trunked into four funnels arranged in a square amidships. This arrangement led to the ships being nicknamed Zementfabriken (cement factories). Three generators provided 69 kilowatts of electrical power at 65 volt
s. The ships' designed speed was 13 knots (7.1 m/s), at 5600 ihp. All four ships exceeded this speed on trials by between one half to one knot. The ships were designed to store 420 MT (413.4 LT) of coal, though they could be modified to carry up to 700 MT (688.9 LT). The ships could steam for 1940 nautical miles (3,592.9 km) at a cruising speed of 10 kn (5.4 m/s). At maximum speed, the ships' ranges were reduced to 700 nmi (1,296.4 km). The four Sachsen-class ships were the first large, armored warships built for the German navy that relied entirely on engines for propulsion.
. After 1886, three 35 cm (13.8 in) torpedo tube
s were installed on each ship; one tube was placed in a swivel mount in the stern and two were placed in the bow, submerged. The tubes were supplied with a total of 12 torpedoes. Later, a pair of 45 cm (17.7 in) torpedo tubes were mounted in the ships' hulls above water on the broadside
.
The ships' armor was made of wrought iron
and backed with teak
. The armored belt was composed of four alternating layers of wrought iron and teak. The outer iron layer was 203 mm (8 in) thick amidships, backed with 200 mm (7.9 in) of teak. The inner iron layer was 152 mm (6 in) thick and was backed with 230 mm (9.1 in) of teak. It was capped with 254 mm (10 in) thick bulkheads on either end of the belt. The thickness of the deck armor ranged from 50 millimetre. The forward conning tower
had 140 mm (5.5 in) thick sides, though after their modernization, this was increased to 200 mm (7.9 in) thick sides and a 50 mm (2 in) roof was added. A rear conning tower was also added, with only splinter protection: 15 mm (0.590551181102362 in) thick sides and a 12 mm (0.47244094488189 in) thick roof. The barbettes for the main battery guns had 254 mm of wrought iron backed with 250 mm of teak.
was actually the first ship to be laid down; work on her keel began in 1874 at the Imperial Dockyard
in Kiel
, under construction number 3. She was not launched until 13 May 1878, nearly one year after her sister Sachsen. She was commissioned on 4 August 1881, rendering her the third ship of the class to enter service. was the fourth and final ship of the class; she was laid down at the Imperial Dockyard in Kiel in 1876. She was launched on 28 July 1880 and commissioned into the fleet on 24 September 1881.
The ships built by AG Vulcan—Sachsen and Württemberg—were completed in three and five years, respectively. The two vessels built by the Imperial Dockyard—Bayern and Baden—, required eight and seven years' work, respectively. One of the primary causes for the great disparity in build times was the experience of the shipbuilders. AG Vulcan was an established commercial ship builder, while the Imperial Dockyards were recently founded and still lacked experience in large warship construction.
. Aside from the Sachsens' half-sister , the German Navy took a hiatus on capital ship
building until the late 1880s when the first of the s were laid down. The poor performance of the sortie corvettes, coupled with the rise of the Jeune École
, led Leo von Caprivi
to abandon capital ship construction in favor of torpedo boat
s.
The ships were reactivated for a number of ceremonial duties in the late 1880s, including for the dedication of the Kaiser Wilhelm Canal in June 1887 and a tour of the Baltic by the recently crowned Kaiser Wilhelm II in 1888. In the 1890s, all four ships returned to active service with the fleet, serving in the I Division until the middle of the decade, when the new s began entering service. The four Sachsens were then displaced to the II Division. In the late 1890s, all four of the ships were extensively reconstructed; their secondary armament was modernized and their propulsion systems were rebuilt with new machinery, which increased their speed.
The four ships remained with the fleet until shortly after the turn of the century. Sachsen was removed from duty in 1902 and used as a target ship from 1911 to 1919. Bayern was stricken from the naval register in February 1910 and similarly used as a target vessel until 1919. Württemberg was converted into a torpedo training ship in 1906, equipped with seven 45 cm (17.7 in) torpedo tubes in a variety of different mountings. She served in this capacity until 1919, when she was used briefly as an escort for F-boats. All three ships were broken up for scrap between 1919 and 1920. Baden survived longest, serving as a boom defense hulk
after 1910 and a target ship after 1920. She remained in the German Navy's inventory until 1938, when she was sold for scrapping.
Kaiserliche Marine
The Imperial German Navy was the German Navy created at the time of the formation of the German Empire. It existed between 1871 and 1919, growing out of the small Prussian Navy and Norddeutsche Bundesmarine, which primarily had the mission of coastal defense. Kaiser Wilhelm II greatly expanded...
in the late 1870s to early 1880s. The ships—, , , and —were designed to operate as part of an integrated coastal defense network. The ships were intended to sortie from fortified bases to break up an enemy blockade or landing attempt. Armed with six 26 cm (10.2 in) guns, they were also intended to fight hostile ironclads on relatively equal terms.
Following their commissionings in 1878–1883, the four ships served with the fleet on numerous training exercises and cruises in the 1880s and 1890s. They also participated in several cruises escorting Kaiser Wilhelm II on state visits to Great Britain and to various cities in the Baltic Sea
Baltic Sea
The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...
in the late 1880s and early 1890s. In the late 1890s, the four ships were extensively rebuilt; their secondary batteries were modernized and they received upgraded propulsion systems. They were removed from active duty between 1902 and 1910 and relegated to secondary duties. Sachsen and Bayern became target ships while Württemberg became a torpedo training ship. The three ships were broken up for scrap in 1919–1920. Baden was used as a boom defense hulk
Hulk (ship)
A hulk is a ship that is afloat, but incapable of going to sea. Although sometimes used to describe a ship that has been launched but not completed, the term most often refers to an old ship that has had its rigging or internal equipment removed, retaining only its flotational qualities...
from 1910 to 1920, when she became a target ship. She survived until 1938, when she was sold for scrapping.
Design
Design work on the Sachsen class began in 1872 and lasted until 1874. The ships were intended to operate in the Baltic SeaBaltic Sea
The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...
as a primary component of an integrated coastal defense system proposed by General Albrecht von Stosch
Albrecht von Stosch
Albrecht von Stosch was a German General der Infanterie and Admiral who served as first Chief of the newly created Imperial German admiralty from 1872 to 1883....
, the Chief of the Admiralty. Stosch designated the ships Ausfallkorvetten (sortie corvettes), denoting their intended use. In the event of war with a superior naval power and the imposition of a naval blockade, the Sachsen-class ships would sortie from fortified bases to attack the blockaders. They also had the task of breaking up landing attempts. The German railway network linked the bases so ground forces could be transferred to the sites of enemy landings.
Their roles imposed several design limitations on the vessels. The vessels were designed to operate in coastal areas, which required a shallow draft in order for them to be able to enter any port on the Baltic seaboard. They also required a heavy armament, in order for them to be able to engage any hostile ironclad on equal terms. Because Stosch envisioned only local deployments for the vessels, they had limited coal stowage, as they could easily replenish their supply.
General characteristics and machinery
Displacement (ship)
A ship's displacement is its weight at any given time, generally expressed in metric tons or long tons. The term is often used to mean the ship's weight when it is loaded to its maximum capacity. A number of synonymous terms exist for this maximum weight, such as loaded displacement, full load...
, the vessels displaced 7635 metric tons (7,514.4 LT). When the vessels were fully loaded, they displaced between 7742 MT (7,619.7 LT) and 7938 MT (7,812.6 LT). Their hulls
Hull (watercraft)
A hull is the watertight body of a ship or boat. Above the hull is the superstructure and/or deckhouse, where present. The line where the hull meets the water surface is called the waterline.The structure of the hull varies depending on the vessel type...
were built with transverse bulkheads and double longitudinal iron frames; iron plating covered teak
Teak
Teak is the common name for the tropical hardwood tree species Tectona grandis and its wood products. Tectona grandis is native to south and southeast Asia, mainly India, Indonesia, Malaysia, and Burma, but is naturalized and cultivated in many countries, including those in Africa and the...
backing. The ships had sixteen watertight compartments and a double bottom
Double bottom
A double bottom is a ship hull design and construction method where the bottom of the ship has two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is somewhat higher in the ship, perhaps a few feet, which forms a...
that ran for 60 percent of the length of the hull.
The German navy regarded the ships as poor sea boats, with severe rolling, and a tendency to take on water. The ships had a very small turning radius, however, and were quick to answer commands from the helm. Their standard complement consisted of 32 officers and 285 enlisted men, and while serving as a division flagship, this could be augmented by an additional seven officers and thirty-four sailors. After their reconstruction in the 1890s, the ships' crews were significantly increased, to 33 officers and 344 enlisted men, and later to 35 officers and 401 enlisted men. The ships carried a number of smaller boats, including one picket boat, one launch
Launch (boat)
A launch in contemporary usage refers to a large motorboat. The name originally referred to the largest boat carried by a warship. The etymology of the word is given as Portuguese lancha "barge", from Malay lancha, lancharan, "boat," from lanchar "velocity without effort," "action of gliding...
, one pinnace
Pinnace (ship's boat)
As a ship's boat the pinnace is a light boat, propelled by sails or oars, formerly used as a "tender" for guiding merchant and war vessels. In modern parlance, pinnace has come to mean a boat associated with some kind of larger vessel, that doesn't fit under the launch or lifeboat definitions...
, two cutters, one yawl
Yawl
A yawl is a two-masted sailing craft similar to a sloop or cutter but with an additional mast located well aft of the main mast, often right on the transom, specifically aft of the rudder post. A yawl (from Dutch Jol) is a two-masted sailing craft similar to a sloop or cutter but with an...
, and one dinghy
Dinghy
A dinghy is a type of small boat, often carried or towed for use as a ship's boat by a larger vessel. It is a loanword from either Bengali or Urdu. The term can also refer to small racing yachts or recreational open sailing boats. Utility dinghies are usually rowboats or have an outboard motor,...
.
The four ships were powered by two 3-cylinder single expansion engines. The ships' engines drove a pair of four-bladed screws that were 5 m (16.4 ft) in diameter. The engines were supplied with steam by eight coal-fired trunk boilers. The eight boilers were trunked into four funnels arranged in a square amidships. This arrangement led to the ships being nicknamed Zementfabriken (cement factories). Three generators provided 69 kilowatts of electrical power at 65 volt
Volt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
s. The ships' designed speed was 13 knots (7.1 m/s), at 5600 ihp. All four ships exceeded this speed on trials by between one half to one knot. The ships were designed to store 420 MT (413.4 LT) of coal, though they could be modified to carry up to 700 MT (688.9 LT). The ships could steam for 1940 nautical miles (3,592.9 km) at a cruising speed of 10 kn (5.4 m/s). At maximum speed, the ships' ranges were reduced to 700 nmi (1,296.4 km). The four Sachsen-class ships were the first large, armored warships built for the German navy that relied entirely on engines for propulsion.
Armament and armor
The Sachsen class ships were armed with six 26 cm (10.2 in) L/22 guns mounted in two armored barbettes, one forward and one amidships. Two guns were placed in the forward barbette and four were mounted in the amidships position. These guns were supplied with 480 rounds of ammunition. They could depress to −7° and elevate to 16.5°; this enabled a maximum range of 7400 m (24,278.2 ft). The ships were also equipped with six 8.7 cm (3.4 in) L/24 guns and eight 3.7 cm (1.5 in) Hotchkiss revolver cannonsHotchkiss gun
The Hotchkiss gun can refer to different products of the Hotchkiss arms company starting in the late 19th century. It usually refers to the 1.65-inch light mountain gun; there was also a 3-inch Hotchkiss gun...
. After 1886, three 35 cm (13.8 in) torpedo tube
Torpedo tube
A torpedo tube is a device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units installed aboard surface vessels...
s were installed on each ship; one tube was placed in a swivel mount in the stern and two were placed in the bow, submerged. The tubes were supplied with a total of 12 torpedoes. Later, a pair of 45 cm (17.7 in) torpedo tubes were mounted in the ships' hulls above water on the broadside
Broadside
A broadside is the side of a ship; the battery of cannon on one side of a warship; or their simultaneous fire in naval warfare.-Age of Sail:...
.
The ships' armor was made of wrought iron
Wrought iron
thumb|The [[Eiffel tower]] is constructed from [[puddle iron]], a form of wrought ironWrought iron is an iron alloy with a very low carbon...
and backed with teak
Teak
Teak is the common name for the tropical hardwood tree species Tectona grandis and its wood products. Tectona grandis is native to south and southeast Asia, mainly India, Indonesia, Malaysia, and Burma, but is naturalized and cultivated in many countries, including those in Africa and the...
. The armored belt was composed of four alternating layers of wrought iron and teak. The outer iron layer was 203 mm (8 in) thick amidships, backed with 200 mm (7.9 in) of teak. The inner iron layer was 152 mm (6 in) thick and was backed with 230 mm (9.1 in) of teak. It was capped with 254 mm (10 in) thick bulkheads on either end of the belt. The thickness of the deck armor ranged from 50 millimetre. The forward conning tower
Conning tower
A conning tower is a raised platform on a ship or submarine, often armored, from which an officer can con the vessel; i.e., give directions to the helmsman. It is usually located as high on the ship as practical, to give the conning team good visibility....
had 140 mm (5.5 in) thick sides, though after their modernization, this was increased to 200 mm (7.9 in) thick sides and a 50 mm (2 in) roof was added. A rear conning tower was also added, with only splinter protection: 15 mm (0.590551181102362 in) thick sides and a 12 mm (0.47244094488189 in) thick roof. The barbettes for the main battery guns had 254 mm of wrought iron backed with 250 mm of teak.
Construction
, the first ship of the class, was laid down at the AG Vulcan shipyard in Stettin in 1875, under construction number 74. The ship was launched on 21 July 1877 and commissioned into the fleet on 20 October 1878. AG Vulcan also built , which was laid down in 1876 under construction number 78. She was launched on 9 November 1878 and commissioned for service on 9 May 1881.was actually the first ship to be laid down; work on her keel began in 1874 at the Imperial Dockyard
Kaiserliche Werft Kiel
Kaiserliche Werft Kiel was a German shipbuilding company founded in 1867, first as Königliche Werft Kiel but renamed in 1871 with the proclamation of the German Empire...
in Kiel
Kiel
Kiel is the capital and most populous city in the northern German state of Schleswig-Holstein, with a population of 238,049 .Kiel is approximately north of Hamburg. Due to its geographic location in the north of Germany, the southeast of the Jutland peninsula, and the southwestern shore of the...
, under construction number 3. She was not launched until 13 May 1878, nearly one year after her sister Sachsen. She was commissioned on 4 August 1881, rendering her the third ship of the class to enter service. was the fourth and final ship of the class; she was laid down at the Imperial Dockyard in Kiel in 1876. She was launched on 28 July 1880 and commissioned into the fleet on 24 September 1881.
The ships built by AG Vulcan—Sachsen and Württemberg—were completed in three and five years, respectively. The two vessels built by the Imperial Dockyard—Bayern and Baden—, required eight and seven years' work, respectively. One of the primary causes for the great disparity in build times was the experience of the shipbuilders. AG Vulcan was an established commercial ship builder, while the Imperial Dockyards were recently founded and still lacked experience in large warship construction.
Service history
Though Sachsen entered service in 1878, she only participated in one annual fleet exercise, in 1880, before all four ships were assigned to the 1884 maneuvers. This was due to the poor performance of Sachsen in the 1880 maneuvers and the negative reputation of the class. Among the problems associated with the Sachsen class ships was a tendency to roll dangerously due to their flat bottoms, which greatly reduced the accuracy of their guns. The ships were also poorly armored, compared to their contemporaries. In addition, they were slow and suffered from poor maneuverability. The four ships served rotations with the fleet for the next two years, though in 1886, all four were demobilized as the Reserve Division in the BalticBaltic Sea
The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...
. Aside from the Sachsens' half-sister , the German Navy took a hiatus on capital ship
Capital ship
The capital ships of a navy are its most important warships; they generally possess the heaviest firepower and armor and are traditionally much larger than other naval vessels...
building until the late 1880s when the first of the s were laid down. The poor performance of the sortie corvettes, coupled with the rise of the Jeune École
Jeune Ecole
The Jeune École was a strategic naval concept developed during the 19th century. It advocated the use of small, powerfully equipped units to combat a larger battleship fleet, and commerce raiders capable of ending the trade of the rival nation...
, led Leo von Caprivi
Leo von Caprivi
Georg Leo Graf von Caprivi de Caprera de Montecuccoli was a German major general and statesman, who succeeded Otto von Bismarck as Chancellor of Germany...
to abandon capital ship construction in favor of torpedo boat
Torpedo boat
A torpedo boat is a relatively small and fast naval vessel designed to carry torpedoes into battle. The first designs rammed enemy ships with explosive spar torpedoes, and later designs launched self-propelled Whitehead torpedoes. They were created to counter battleships and other large, slow and...
s.
The ships were reactivated for a number of ceremonial duties in the late 1880s, including for the dedication of the Kaiser Wilhelm Canal in June 1887 and a tour of the Baltic by the recently crowned Kaiser Wilhelm II in 1888. In the 1890s, all four ships returned to active service with the fleet, serving in the I Division until the middle of the decade, when the new s began entering service. The four Sachsens were then displaced to the II Division. In the late 1890s, all four of the ships were extensively reconstructed; their secondary armament was modernized and their propulsion systems were rebuilt with new machinery, which increased their speed.
The four ships remained with the fleet until shortly after the turn of the century. Sachsen was removed from duty in 1902 and used as a target ship from 1911 to 1919. Bayern was stricken from the naval register in February 1910 and similarly used as a target vessel until 1919. Württemberg was converted into a torpedo training ship in 1906, equipped with seven 45 cm (17.7 in) torpedo tubes in a variety of different mountings. She served in this capacity until 1919, when she was used briefly as an escort for F-boats. All three ships were broken up for scrap between 1919 and 1920. Baden survived longest, serving as a boom defense hulk
Hulk (ship)
A hulk is a ship that is afloat, but incapable of going to sea. Although sometimes used to describe a ship that has been launched but not completed, the term most often refers to an old ship that has had its rigging or internal equipment removed, retaining only its flotational qualities...
after 1910 and a target ship after 1920. She remained in the German Navy's inventory until 1938, when she was sold for scrapping.