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Count Dohna and His SeaGull ©

Caliber


Appam Gun.
The 3-inch gun removed from the liner Appam and carried to Germany by SeaGull. In Germany it was displayed in a traveling war exhibitition.

SeaGull raided Allied shipping armed with one 105-mm, and four 150-mm guns. The 105-mm was mounted at the stern. Two 150-mm guns were mounted two on each side just aft of the forecastle. These guns were not placed symmetrically so that one starboard guns could fire directly ahead of the ship and the port guns had a range of fire further astern.
The 105-mm gun (10.5 SK L/40) could fire 15 rounds per minute with a maximum range of 7.9 miles. It was most effective at ranges under 2 miles. The gun fired a projectile that weighted 38 pounds.
The 150-mm guns (15.0 SK L/45) could fire 4 to 5 rounds per minute with a maximum range of 10.9 miles. It was most effective over longer ranges. The gun fired a projectile that weighted 50 pounds. The 150-mm guns had been removed from the German Battleship Kaiser Wilhelm II.
SeaGull also carried two 52-mm guns (5.2 SK L/55) with collapsible mountings to arm captured vessels. The only vessel captured and armed was the Saint Theodore. The 52-mm guns were returned to SeaGull before that ship was sunk.
SeaGull carried various rounds to be fired from her guns; armor piercing, splinter, high explosive and blank rounds. Armor piercing rounds were intended for use against armored naval ships and were not used at any time. Splinter rounds exploded on contact and scattered shrapnel in all directions. High explosive rounds exploded on contact and were effective against the unarmored merchant vessels. Blank rounds were wooden projectiles fired from the guns; these were used when firing warning shots across the bows of vessels being attacked.
The caliber of guns described in the text.
MILLIMETERS
INCHES
170
6.7
155
6.1
150
5.9
120
4.7
105
4.1
102
4.0
88
3.4
75
3
50/52
2

Last Revision: March 4, 2007.
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