Wars Baltic Ordnance Safety Board HELCOM SUBMERGED Szczecin - PowerPoint PPT Presentation

The explosive legacy from the Wars Baltic Ordnance Safety Board HELCOM SUBMERGED Szczecin 2014-10-29

575 308 179 730 1914-1945

180 000 mines laid in 2200 minefields 1848-1945

Mine disposal 1914-1920

The accuracy of the positions are dependent on two factors: “The navigational factor” & “The source factor”

“The navigational factor” The positions of the minefield can't be more precise than the accuracy of the navigation when the mines were laid

“The navigational factor” Manoeuvres Time after the last positioning ´19.33 Threat 22.58 21.00 Wind & Sea 24 May 1915

“The source factor”

Angiven position

Navigation factor (N)

Source factor (S)

Mine Danger Area

How many remains?

Baltic Ordnance Safety Board SWEDEN, GERMANY, DENMARK, POLAND, LITHUANIA, LATVIA, ESTONIA & FINLAND

Cleared areas 1995-2011

Baltic Ordnance Safety Board priority system

Criteria • Activity (1-7p) – Shipping (1-7p) – Anchorage Areas (Full p) – Fishery (1-3p) – UW-installations (Not implemented) • Depth (1-7p) • Intelligence (1-5p) • Mine density (1-7p) • Clearance (-1- -7p or -29p) • Seabed conditions (Yes/No) • Biology/Environmental Protection Areas

7 p 6 p 4 p 3 p 1 p Shipping

3 p 2 p 1 p Fishery

7 p 6 p 5 p 4 p 3 p 2 p Depth

5 p 4 p 3 p 2 p 1 p Intelligence

7 p 6 p 5 p 4 p 3 p 2 p 1 p Mine density

Shipping + Fishery + Anchorage Areas + Depth + Intelligence + Mine density _ Clearance

Priority Total

The efficiency of BOSB supported operations 1999-2007 0,55 mines/unit/day 2008-2012 1,05 mines/unit/day Mines found in areas not known to be mined pre 1999-2007 0,31 mines/unit/day BOSB 2008-2011 0,75 mines/unit/day Mines found due to surgical operations in areas cleared pre BOSB

If we shall be successful: 1. Merge available data of where and what and present it in a compiled picture. One nation should be responsible for the master database 2. Try to figure out what we don´t know and what we have to know 3. Make a general prioritization based on criterias and available data 4. Go into details (research) of each area and refine the compiled picture and prioritized areas.