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Their ] consisted of transverse steel frames, over which the composite steel and timber hull planking was laid. They were sheathed in ] to protect them from marine ] on extended voyages abroad. ''Iltis''{{'}}s hull was divided into eleven ] comparments, while the rest of the class only had ten. They all had a ] under the propulsion machinery spaces. The first two ships had a raised ] deck and a pronounced ], while the latter four exchanged the ram for a straight ]. Their ] consisted primarily of a ] with an open ] atop it. They had a crew of 9 officers and 121 enlisted men.{{sfn|Gröner|pp=142–143}}{{sfn|Lyon|p=260}}
Their ] consisted of transverse steel frames, over which the composite steel and timber hull planking was laid. They were sheathed in ] to protect them from marine ] on extended voyages abroad. ''Iltis''{{'}}s hull was divided into eleven ] comparments, while the rest of the class only had ten. They all had a ] under the propulsion machinery spaces. The first two ships had a raised ] deck and a pronounced ], while the latter four exchanged the ram for a straight ]. Their ] consisted primarily of a ] with an open ] atop it. They had a crew of 9 officers and 121 enlisted men.{{sfn|Gröner|pp=142–143}}{{sfn|Lyon|p=260}}
The ships' propulsion system consisted of a pair of horizontal ]s each driving a single ],withsteam supplied by four coal-fired ]s. Exhaust was vented through two ] located ]. The ships was rated to steam at a top speed of {{convert|13.5|kn|lk=in}} at {{convert|1300|PS|ihp|lk=in}}, though all members of the class exceeded these figures in service. The ships' engines varied in efficiency. ''Iltis'' and ''Jaguar'' had a cruising radius of about {{convert|3080|nmi|lk=in}} at a speed of {{convert|9|kn}}, but at the same speed, ''Tiger'' and ''Luchs'' were capable of only {{convert|2580|nmi}}. ''Panther'' and ''Eber'', meanwhile, could sail for {{convert|3400|nmi}} at that speed.{{sfn|Gröner|pp=142–143}}{{sfn|Lyon|p=260}}
''Iltis''{{'}}s propulsion system consisted of a pair of horizontal ]s, each driving a single three-bladed ]; the rest of the class received vertical triple-expansion engines. The engines were placed in a single ]. Steam for the engines was supplied by four coal-fired ]s, with the exception of ''Eber'', which received four navy-type boilers. All ships had their boilers installed in a single ]. Exhaust was vented through two ] located ]. The ships was rated to steam at a top speed of {{convert|13.5|kn|lk=in}} at {{convert|1300|PS|ihp|lk=in}}, though all members of the class exceeded these figures in service. The ships' engines varied in efficiency. ''Iltis'' and ''Jaguar'' had a cruising radius of about {{convert|3080|nmi|lk=in}} at a speed of {{convert|9|kn}}, but at the same speed, ''Tiger'' and ''Luchs'' were capable of only {{convert|2580|nmi}}. ''Panther'' and ''Eber'', meanwhile, could sail for {{convert|3400|nmi}} at that speed.{{sfn|Gröner|pp=142–143}}{{sfn|Lyon|p=260}}
''Iltis'' and ''Jaguar'' were armed with a ] of four ] guns, with 1,124 rounds of ammunition. Two guns were placed side-by-side on the forecastle and the other pair side-by-side near the ]. The rest of the class exchanged these guns for a pair of ], with 482 rounds of ammunition. These were also carried at the bow and stern, but singly. All six ships also carried six ]. The only armor protection carried by the ships was {{cvt|8|mm}} of steel plate on the conning tower.{{sfn|Gröner|pp=142–143}}{{sfn|Nottelmann|p=74}}
''Iltis'' and ''Jaguar'' were armed with a ] of four ] guns, with 1,124 rounds of ammunition. Two guns were placed side-by-side on the forecastle and the other pair side-by-side near the ]. The rest of the class exchanged these guns for a pair of ], with 482 rounds of ammunition. These were also carried at the bow and stern, but singly. All six ships also carried six ]. The only armor protection carried by the ships was {{cvt|8|mm}} of steel plate on the conning tower.{{sfn|Gröner|pp=142–143}}{{sfn|Nottelmann|p=74}}
The ships of the Iltis class varied slightly in dimensions. The first four ships were 65.2 meters (213 ft 11 in) long overall and had a beam of 9.1 m (29 ft 10 in), while Panther and Eber were 66.9 m (219 ft 6 in) long overall; their beam increased slightly to 9.7 m (31 ft 10 in). The ships had a draft of 3.54 to 3.59 m (11 ft 7 in to 11 ft 9 in) forward. Iltis and Jaguardisplaced 894 metric tons (880 long tons) as designed and 1,048 t (1,031 long tons) at full load. Tiger and Luchs had the same design displacement, but full load increased to 1,108 t (1,091 long tons). The final pair of ships, Panther and Eber, increased design displacement to 977 t (962 long tons) and full load to 1,193 t (1,174 long tons).
Their hull consisted of transverse steel frames, over which the composite steel and timber hull planking was laid. They were sheathed in Muntz metal to protect them from marine biofouling on extended voyages abroad. Iltis's hull was divided into eleven watertight comparments, while the rest of the class only had ten. They all had a double bottom under the propulsion machinery spaces. The first two ships had a raised forecastle deck and a pronounced ram bow, while the latter four exchanged the ram for a straight stem. Their superstructure consisted primarily of a conning tower with an open bridge atop it. They had a crew of 9 officers and 121 enlisted men.
Iltis's propulsion system consisted of a pair of horizontal triple-expansion steam engines, each driving a single three-bladed screw propeller; the rest of the class received vertical triple-expansion engines. The engines were placed in a single engine room. Steam for the engines was supplied by four coal-fired Thornycroft boilers, with the exception of Eber, which received four navy-type boilers. All ships had their boilers installed in a single boiler room. Exhaust was vented through two funnels located amidships. The ships was rated to steam at a top speed of 13.5 knots (25.0 km/h; 15.5 mph) at 1,300 metric horsepower (1,300 ihp), though all members of the class exceeded these figures in service. The ships' engines varied in efficiency. Iltis and Jaguar had a cruising radius of about 3,080 nautical miles (5,700 km; 3,540 mi) at a speed of 9 knots (17 km/h; 10 mph), but at the same speed, Tiger and Luchs were capable of only 2,580 nautical miles (4,780 km; 2,970 mi). Panther and Eber, meanwhile, could sail for 3,400 nautical miles (6,300 km; 3,900 mi) at that speed.
Iltis and Jaguar were armed with a main battery of four 8.8 cm (3.5 in) SK L/30 guns, with 1,124 rounds of ammunition. Two guns were placed side-by-side on the forecastle and the other pair side-by-side near the stern. The rest of the class exchanged these guns for a pair of 10.5 cm (4.1 in) SK L/40 guns, with 482 rounds of ammunition. These were also carried at the bow and stern, but singly. All six ships also carried six 37 mm (1.5 in) Maxim guns. The only armor protection carried by the ships was 8 mm (0.31 in) of steel plate on the conning tower.
Gröner, Erich (1990). German Warships: 1815–1945. Vol. I: Major Surface Vessels. Annapolis: Naval Institute Press. ISBN978-0-87021-790-6.
Hildebrand, Hans H.; Röhr, Albert & Steinmetz, Hans-Otto (1993). Die Deutschen Kriegsschiffe: Biographien: ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart [The German Warships: Biographies: A Reflection of Naval History from 1815 to the Present] (in German). Vol. 2. Ratingen: Mundus Verlag. ISBN978-3-8364-9743-5.
Hildebrand, Hans H.; Röhr, Albert & Steinmetz, Hans-Otto (1993). Die Deutschen Kriegsschiffe: Biographien – ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart [The German Warships: Biographies − A Reflection of Naval History from 1815 to the Present] (in German). Vol. 4. Ratingen: Mundus Verlag. ISBN978-3-7822-0382-1.
Hildebrand, Hans H.; Röhr, Albert & Steinmetz, Hans-Otto (1993). Die Deutschen Kriegsschiffe: Biographien: ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart (Band 5) [The German Warships: Biographies: A Reflection of Naval History from 1815 to the Present (Vol. 5)] (in German). Ratingen: Mundus Verlag. ISBN978-3-7822-0456-9.
Hildebrand, Hans H.; Röhr, Albert & Steinmetz, Hans-Otto (1993). Die Deutschen Kriegsschiffe: Biographien: ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart (Band 7) [The German Warships: Biographies: A Reflection of Naval History from 1815 to the Present (Vol. 7)] (in German). Ratingen: Mundus Verlag. ISBN9783782202671.
Hildebrand, Hans H.; Röhr, Albert & Steinmetz, Hans-Otto (1993). Die Deutschen Kriegsschiffe: Biographien – ein Spiegel der Marinegeschichte von 1815 bis zur Gegenwart [The German Warships: Biographies − A Reflection of Naval History from 1815 to the Present] (in German). Vol. 8. Ratingen: Mundus Verlag.
Nottelmann, Dirk (2022). "The Development of the Small Cruiser in the Imperial German Navy Part III: The Gunboats". In Jordan, John (ed.). Warship 2022. Oxford: Osprey Publishing. pp. 63–79. ISBN978-1-4728-4781-2.
A 1902 lithograph of Iltis
