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Wrecks of the Baltic Sea

A cache by Luttu Send Message to Owner Message this owner
Hidden : 7/18/2012
3 out of 5
4 out of 5

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Geocache Description:

(the bogus coordinates have been randomly generated, and do not reflect any hint with respect to the mystery. This is a simple history knowledge mystery, not a field puzzle. No hidden information nor cats i.e. false data included.)

Thousands of wrecks down there

There are more than 20'000 wrecks in the Baltic Sea. Which are known. Some historians estimate that there are approximately 100'000 wrecks in the Baltic, considering that the human settlement has been there about 10'000 years.

An old Dutch ship near Hanko. Photo: M. Anttila
An old Dutch ship, dated to ca. 1700, between Hanko and Russarö. Mast cross-trees are in ~18 meters, picture taken from below towards surface. Photo: Cache owner

Some of the wrecks have higher value with respect to the public interest. These wrecks include war wrecks, well-preserved wooden wrecks with possible artefacts in them, and of course - and sadly - wrecks that have took high number of casualties with them.

Some say that it's impossible to list the wrecks in any "order", but still some people, especially the wreck diver community, value certain wrecks more. A typical reason could be interesting history, large size of the wreck, or certain rare ship type. In any case the war wrecks are considered highly interesting, but divers always need a permission to dive there if the wreck lies on national waters.

Your work here is to study a bit of history. Everything you need, can be found on public sources. Not necessarily from one source, but the Google (etc.) is all you need.

Determine the name of the ship without a prefix. Count the letters. Spaces are not counted. Example: "M/S Ship" equals to four. Each name has more than zero letter(s).

This German cruise ship sank after a Soviet submarine torpedoed it on January 1945. It is estimated that this is the largest known number of casualties in a maritime disaster ever, with more than 9000 victims.

There is a commemorative candle holder, one candle for each of the ten victims, in a nearby chapel in this Finnish island. Two words.

This Russian wreck lies in the bottom in the most unusual vertical position. The depth of the sea is about 74 meters at the grave site, where the ship has been resting for more than a hundred years already.

Built in St. Petersburg, this huge ship was torpedoed by a German submarine. The now-wrecked ship serviced only about eight years. It lies in the bottom capsized and in three pieces. Two and a half months before its loss, this ship took part - along with Bogatyr - in capturing secret information from a German ship Magdeburg.

This enormous ship was never operational. It sunk after the WWII, after being hammered by two dozens of bombs and projectiles, and finished by two torpedoes. It was discovered again in 2006.

This German wreck rests in approximately N 59°53.9, E 24°20.5. See also this nice picture of its compass!

A different story of destiny here. Launched in 1933, and last time it sailed as a war ship of the Finnish Navy was 1944. The ship was kept in a ship yard in Katajanokka later (~50 years ago) also. Fleet of five.

The wreck site is an underwater historical park near Helsinki, opened in 2000. Three words in the name.

Cache location:
60° AA.BBB
25° CC.DDD
AA = H-E+G
BBB = ((Digital root of sum of A to H)*B*(H/2)) - (2*A)
CC = H-A
DDD = ((Digital root of sum of B to G)*(D+E+F)) + (A+3*F+H)

Hopefully these equations don't make you feel frustrated, but they just ensure you have the right answer. Which you can also check here:

Additional Hints (Decrypt)

- bar bs gur jerpxf vf gur ynetrfg xabja va gur Onygvp Frn
- bar bs gur jerpxf unf nyfb guerr ahzoref va vgf anzr
- bar bs gurfr lbh unir cebonoyl frra
- bar bs gur jerpxf vf gur ynetrfg xabja jerpx va gur Svaavfu jngref

- sylvat Qhgpuzna

Decryption Key


(letter above equals below, and vice versa)



  • The compass of the wreck F.Well-preserved artefacts and nuances in the wrecks make them like museums. It is strictly illegal to take anything but photographs from any wreck.

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Coordinates are in the WGS84 datum

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