J. VAN DER VLIES
.„hi* took part
°"e sinking operations
Our company contributed to the closing of the following tidal gaps:
HYDRAULIC ENGINEERING
BRUSHWOOD STRUCTURES
GROUNDWORK AND REVETMENTS
SUPPLIERS OF BRUSHWOOD
PILEDRIVING
able motor tugboats,
in the sir
f the indispens3
PHOTO: K.L.M.
A mattress for the treacherous
gully at Schelphoek (Schouwen-
Duiveland) being towed to its des
tination. Dimensionsof themattress
40 x 40m (131 X 131ft.). It willbe
sunk at the turn of the tide. In
front of and alongside the mattress
there are dumb barges loaded with
stones (10 to 80 kg each)As soon as
the mattress has been manoeuvred
into position a further four barges
will come alongside. In all about
600 to 700 tons of stone are requir
ed to sink the mattress. The white
streaks in the water clearly show
the velocity of the water rushing
out of the polder. The hawsers, each
985 ft. long, which have been plac
ed on the mattress will be used
in the sinking operations. This
photograph was made on 22nd
July, 1953.
PAPENDRECHT: tidal gap in the dike of the Noord (Alblasserwaard).
HELLEVOETSLUIS: tidal gap in the sea wall of Voorne en Putten.
HERKINGENtidal gap in the sea wall of Goeree-Overflakkee
OOSTERLANDtidal gap in the sea wall of Schouwen-Duiveland.
SCHELPHOEK: tidal gap in the sea wall of Schouwen-Duiveland.
RAMPAARTSEDIJKtidal gap in the inner dike of Schouwen-Duiveland.
Furthermore, we carried out work under subcontracts on the new
sea wall along the south coast of Goeree-Overflakkee. Here we
placed about 18 km of creosoted wooden sheet piling about six to
ten feet long. In addition, ourfloating piledriving installation drove
the piles for some ten jetties.
AANNEMERSBEDRIJF
SLIEDRECHT/B 70 (HOLLAND)
87
