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Precis File
SHIP NAME: Dona Marika KEY: NUM. ENTRIES: 5
source SIS83
type D
volume
material
dead
link

grounded milford haven after dragging anchor in gale


source MIT79
type D
volume 3000LT
material gasoline
dead
link

Dragged anchor off mouth of Milford Haven, gale force winds, large seas, gasoline spill


source ITOPF
type A
volume 3000T
material gasoline
dead
link

The Dona Marika grounded in Lindsway Bay near the mouth of Milford Haven on 5th August, 1973, and about 3,000 tonnes of petrol were spilled. Because the spill was in a semi-enclosed area and during a period of high winds and heavy seas, water-in-petrol emulsions were unusually formed and this retarded the evaporation rate. This spill therefore represents an extreme case of a toxic light product contacting marine flora and fauna. Sub-littoral effects included large numbers of narcotised bivalves and dead Echinocardium, and there were massive losses of invertebrates (notably limpets) from the rocky shores. This was followed by a spectacular proliferation of green algae, mainly Enteromorpha. Recovery (as assessed by a number of long-term monitoring transects within the area), was well-progressed by 1979.


source CEDRE
type A
volume 3000T
material petrol
dead 0
link http://www.le-cedre.fr/en/spill/dona_marika/dona_marika.php

On 5 August 1973, the tanker Dona Marika was anchored in the entrance of Milford Haven harbour. During the night, her anchor dragged because of very stormy weather. The vessel ran aground on rocks near Great Castle Head, Dale Roads, and spilled 3000 tonnes of petrol. All 38 crew members were rescued.


source CTX
type D
volume
material
dead
link

The ship had a dwt of about 18000 dwt with only 5000 t of cargo on-board. So she was quite light. The area where she was anchored, Dale Roads, is semi-protected inside the mouth of Milford Haven.

It is very unlikely that an 18000 dwt ship came all the way from Sicily with only 5000 t of cargo on-board. She must have been part-discharged. Why did she interrupt her discharge and leave the fully protected terminal further up the Haven?

How much did he ballast down? Was he limited by the depth where he chose to stay?

To go to sea in a gale would require ballasting down. and delay resuming discharge, but staying where he did left him no room for maneuver if he dragged. What was the thinking?

Once he dragged in light condition with a single screw ship, he was nearly helpless. Why did they not move out to sea?

There must be an investigation report, but CTX cannot find it.