Sand wall built to protect Flemish coast from oil spills

Summary

Civil defence workers have built a sand berm off the coast of Knokke-Heist after a tanker and ship collided, releasing two oil spills

Taking no chances

Civil defence staff have been working through the night to build a sand berm off the coast of Knokke-Heist near the Zwin nature reserve as a precaution against oil leaking from a Dutch cargo ship. The ship collided with a tanker off the coast of Zeebrugge on Tuesday.

The 9,000-tonne Flinterstar out of Barendrecht, the Netherlands, partially sank after it collided at 4.15 yesterday morning with the Marshall Islands-registered gas tanker Al-Oriaq. The accident occurred  some eight kilometres off the coast. The crew of the ship, which was on its way to Bilbao, were picked up, and the ship settled on a sandbank, the water reaching to the upper deck (pictured).

According to the cargo company Flinter, the ship was carrying steel and crane parts. The tanker suffered slight damage and was brought to Zeebrugge.

Despite the absence of dangerous substances, the Flinterstar was leaking oil, and two oil slicks have been detected, one 3 x 2 kilometres and one three kilometres long and 100 metres wide. Dutch marine authorities said the spills were not heading for land but moving in a north-easterly direction in the North Sea.

As a precaution, Belgium’s civil defence force moved its oil protection material into place. The Zwin nature reserve, which lies on the border between Flanders and Zeeland, the Netherlands, was closed off, and civil defence began constructing a sand barrier to stop the oil spills, should either of them reverse direction.

The construction of the berm, a wall of sand 33m long and one metre high, required four cranes and eight million tonnes of sand and had to be ready by high tide at 8.00 this morning.

The cause of the accident is under investigation. The enquiry will be carried out by the same team that investigated the sinking of the fishing vessel Morgenster in January.

Photo courtesy defence department

Zwin nature reserve

The Zwin nature reserve is Flanders’ oldest nature reserve and its largest tidal salt marsh site. Located in Knokke-Heist, the lagoon comprises many dunes, salt marshes and two inlet channels.
Development - From 2013 until 2015, the reserve will be closed for major development that will increase its surface by 120 hectares and return the Willem-Leopold polder to the water.
Birds - The reserve’s small islands are a prime breeding and overwintering site for birds like the black-headed gull, avocet, redshank and shellduck.
Biodiversity - Since the 1980s, sand deposits have been causing the lagoon to slowly fill up, with a resulting sharp loss of biodiversity.
180

hectares of surface area

1 939

reserve is classified as protected landscape

4

million euro budget in 2013-2015 restoration project

  • million euro budget in 2013-2015 restoration project
  • Agentschap Natuur en Bos
  • Zwin Tidal Area Restoration