8,8 cm SK C/35 from U 766 - Point de Pen Hir, Finistére, FRA
Posted by: Groundspeak Premium Member André de Montbard
N 48° 16.094 W 004° 36.980
30U E 380056 N 5347376
Quick Description: Main gun of U 766, a World War II german submarine, which surrendered 1945 at La Pallice in front of the Musée-mémorial de la bataille de l'Atlantique.
Location: Bretagne, France
Date Posted: 12/26/2020 7:53:12 AM
Waymark Code: WM13JPJ
Published By: Groundspeak Premium Member lumbricus
Views: 1

Long Description:
German submarine U-766 was a Type VIIC U-boat built for the navy (Kriegsmarine) of Nazi Germany during World War II. She was later incorporated in the French Navy, where she served as Laubie.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-766 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.[1] She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Garbe, Lahmeyer & Co. RP 137/c double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).[1] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-766 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, (220 rounds), one 3.7 cm (1.5 in) Flak M42 and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.

The 8.8 cm SK C/35 gun weighed 776 kilograms (1,711 lb) and had an overall length of 3.985 meters (13 ft 0.9 in) with a vertical sliding-block breech. The gun fired a 9.5 kg (21 lb) projectile 88 mm in diameter, and the barrel is sometimes described as 45 caliber. A 2.82 kg (6.2 lb) propellent charge produced muzzle velocity of 700 m/s (2,300 ft/s) with nose-fuzed high explosive and high explosive incendiary projectiles (with or without tracer). Useful life expectancy was 12,000 effective full charges (EFC) per barrel.

Ammunition was of a fixed type with a Complete Round Weight of 15 kg (33 lb) and a projectile length of around 355 mm (14.0 in). The gun was able to fire

Armor Piercing (AP) - 10.2 kg (22 lb)
High Explosive (HE) - 9 kg (20 lb)
Illumination (ILLUM) - 9.4 kg (21 lb)

The High Explosive (HE) round has a muzzle velocity of 700 m/s (2,300 ft/s.

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What type of artillery is this?: Ship Gun

Where is this artillery located?: Monument grounds

What military of the world used this device?: Nazi German Navy

Date artillery was in use: Not listed

Date artillery was placed on display: Not listed

Parking location to view this Waymark: Not Listed

Cost?: Not Listed

Artillery is no longer operational: Not Listed

Still may work: Not Listed

Are there any geocaches at this location?: Not listed

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