ORP Delfin

 54° 38′ 52.2″ N , 18° 36′ 11.2″ E

Depth above the wreck13m

Depth at the bottom20m



Launched October 10, 1942 at the Robert Jacob City Island shipyard in New York. He belonged to wooden base minesweepers of the “BYMS” type. Name during service in the British Navy – “BYMS-2211”. He was incorporated into the MW on April 19, 1948. During service in the Polish Navy, the side name “DF” later “T-31”. , decommissioned and intended for cassation on June 26, 1957. It was sunk in the middle of the Puck Bay, where it was used for military aviation exercises. Today it rests almost in the middle of the basin about seven miles from Hel and about four miles from Jastarnia.


Length 41.90 m
The width of the bend is 7.70 m
Draft 2.40 m
Displacement 277 t
Equipped with two 735 kW (1000 HP) GMC diesel engines
2 bolts, maximum speed 12.6 knots
A crew of 42 people
One 85 mm gun
4 ckm plot 12.7 mm water cooled Colt system
trawling equipment
SA-IV acoustic trawl
electromagnetic trawl TEM-VI
OROPES contact minesweeper


The hull is clearly inclined to the port side. The wreck is safe and easy to dive due to the lack of equipment and a large part of the superstructures. The most interesting place of the wreck is a gallery on the starboard side and part of the rooms that can be accessed from the gallery or the upper deck. The wreck because of the wooden structure looks very nice inside, however, entering the rooms inside the wreck, due to the large amount of sediments, significantly spoiling visibility, requires the right technique and configuration as well as proper training.

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