Baltic wreck-preservation outdoes itself

Diving News

Several unusually well-preserved 17th- and 18th-century shipwrecks have been discovered in the Baltic Sea in recent years – but now divers have explored two significantly older ships found there.

The wrecks are mostly buried in mud, but the oldest is thought to be a mediaeval cog, dating from the 14th or 15th century.

Cog ships, widely used for trading in the Baltic Sea for centuries, had a single square-rigged sail and were usually built of oak. The vessel discovered is 23–25m long with a 7m beam. Protruding deck-beams with unusually high knees and a simple anchor-wheel indicate its age.

The other shipwreck is estimated to be from the 16th century and still stands upright, including its mast. Alongside the discovery of artefacts such as kitchen utensils and tools on board have been 20 barrels of osmond iron, a find said to be unprecedented.

Osmond iron was cast by a particular process developed in Sweden, and its export was banned after 1604.

“My pulse went up when I realised what we were looking at – I have never seen such well-preserved shipwrecks,“ said diver Jim Hansson, maritime archaeologist at the Swedish National Maritime Museums.

The Baltic Sea is able to preserve timber shipwrecks for centuries because its brackish water doesn’t support wood-boring organisms such as shipworms.

There are thought to be at least 100 intact ships on the seabed, according to Nina Eklöf, Project Manager of the Swedish National Maritime Museums’ Treasures of the Baltic Sea.

Also see SIX HISTORIC WRECKS ID’D FOR DIVER TRAIL

This project is set to culminate in the opening of a new maritime-archaeological museum next to Stockholm’s Vasa Museum in Stockholm in 2020.

How Do You Attach a Jon Line? @BrentHollett #askmark #scuba

@IonutParaschiv28
#askmark Hi mark, i have a multipart question regarding the long hose setup i'm considering. I have a set of atomic regulators, an M1 for my primary and a Z2 octo, configured in traditional setup. Questions are: 1. When i switch to a longhose, do i NEED to put in on the Z2 octo (It's not a fully yellow octo, but it does have yellow tints on it - it also stays in a black hose). They're both similar in terms of breathing, but i'd rather have my m1 primary on it. 2. should i go for traditional rubber hoses or braided? I also considered an miflex xt-tech hose for the long hose? I'm mostly concerned about floatines and "scratchy" feeling with the braided ones. Thank you, Keep up the good work 
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@IonutParaschiv28
#askmark Hi mark, i have a multipart question regarding the long hose setup i'm considering. I have a set of atomic regulators, an M1 for my primary and a Z2 octo, configured in traditional setup. Questions are: 1. When i switch to a longhose, do i NEED to put in on the Z2 octo (It's not a fully yellow octo, but it does have yellow tints on it - it also stays in a black hose). They're both similar in terms of breathing, but i'd rather have my m1 primary on it. 2. should i go for traditional rubber hoses or braided? I also considered an miflex xt-tech hose for the long hose? I'm mostly concerned about floatines and "scratchy" feeling with the braided ones. Thank you, Keep up the good work
#scuba #scubadiving #scubadiver
LINKS

Become a fan: https://www.scubadivermag.com/join
Gear Purchases: https://www.scubadivermag.com/affiliate/dive-gear
-----------------------------------------------------------------------------------
OUR WEBSITES

Website: https://www.scubadivermag.com ➡️ Scuba Diving, Underwater Photography, Hints & Advice, Scuba Gear Reviews
Website: https://www.divernet.com ➡️ Scuba News, Underwater Photography, Hints & Advice, Travel Reports
Website: https://www.godivingshow.com ➡️ The Only Dive Show in the United Kingdom
Website: https://www.rorkmedia.com ➡️ For advertising within our brands
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Should I Use My Octo as a Primary? #scuba #askmark

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