|28cm SK L/45 -50 Cartridge Casing|
|A close-up of the head stamping on this example. It was manufactured by POLTE MAGDEBURG with the date "II 15" (Feb 1915). "-268-" is the lot number. The large clear stamping around the base is: "28 cm S.K. L/45 / 50.". Note that the primer has been struck, so this casing was fired.|
|The 325mm (12.79") base of this 28cm SK L/45 -50 cartridge casing shown with an original period Kaiserliche-Marine officer's Schirmmütze to illustrate the size. Although the 28cm cartridge casing for the SK L/40 used in the Deutschland-Klasse pre-dreadnoughts and later on the 28cm Eisenbahngeschütz (railway gun) appear identical, the difference is in the base. Although the bases on both casings are 11mm thick, the SK L/40 base is 320mm in diameter. Due to the longer barrels, the SK L/45 -50 cartridge casings have a base of 325mm and are heavier, possibly due to thicker brass on the entire casing.|
|The Two Main British Grand Fleet Losses from the 28cm SK L/45 -50|
|SMS von der Tann sinks the heavy British battlecruiser HMS Indefatigable|
The 28 cm SK L/45 cannon was carried only on the heavy battlecruiser SMS von der Tann and the Nassau-Klasse battleships (SMS Nassau, SMS Westfalen, SMS Rheinland, and SMS Posen).
28cm SK L/45 Cannon Data:
On 31 May 1916 von der Tann participated in the Battle of Jutland as part of Admiral Franz Ritter von Hipper's First Scouting Group. Shortly before 16:00 hrs Hipper's force encountered Vice Admiral Beatty's battlecruiser squadron. The German ships were the first to open fire, at a range of approximately 14,000 meters (15,000 yards). At 16:49, von der Tann fired her first volly at the heavy British battlecruiser HMS Indefatigable. After fourteen minutes of firing von der Tann had scored five hits on Indefatigable; the final hit caused Indefatigable to violently explode and sink. Of Indefatigable's crew of 1017, there were only three survivors.
|SMS Seydlitz sinks the heavy British battlecruiser HMS Queen Mary|
The 28 cm SK L/50 cannon was carried only on the heavy battlecruisers SMS Seydlitz and Moltke-Klasse (SMS Moltke and SMS Goeben).
28cm SK L/50 Cannon Data:
On 31 May 1916 Seydlitz participated in the Battle of Jutland as part of Admiral Franz Ritter von Hipper's First Scouting Group. By 17:25, the British battlecruisers were taking a severe battering from their German opponents so Beatty ordered his ships to turn away in order to regroup. As the British battlecruisers began to turn away, Seydlitz and Derfflinger were able to concentrate their fire on the heavy British battlecruiser HMS Queen Mary. Witnesses stated that at least 5 shells from two salvos hit the ship, which caused a massive explosion that ripped the Queen Mary in half. Of Queen Mary's crew of 1275, there were only nine survivors.
During the battle SMS Seydlitz took an unbelievable amount of punishment and would not sink. SMS Seydlitz was hit by 21 heavy-caliber shells, twice by secondary battery shells, and by one torpedo.