offered a new market opportunities of 100,000 t. That is twice the current production. Fish culture in cages was considered impossible by the authors because of
the shallow depth and no opinion was formulated towards the production of
seaweeds. Lagerveld et al. (2014) also simulated the feasibility of combining an
offshore wind farm with an offshore mussel farm in the Dutch North Sea, assuming
certain synergies between the two activities.
As a result, Stichting Noordzeeboerderij (the North Sea Farm) is committed to
develop a mass cultivation of seaweeds in the Dutch North Sea. In June 2015,
Hortimare successfully executed a small scale test on the Dutch North Sea, 10 km
North-East from the Island of Texel. This test site includes brown macroalgae, such
as Saccharina latissima as well as Laminaria digitata. The test farm for S. latissima
off Texel has a size of one km
2 , the L. digitata farm at the location called
Proefboerderij is slightly smaller. Another test site is planned a few kilometers off
the coast from Scheveningen (The Hague).
The planned construction of the new windmill park in Borsele (capacity of
1050–2100 MW, 22 km offshore of the Province of Zeeland, with a depth between
10 and 40 m), that will start in the second half of 2016 has led to strong discussions
about offshore aquaculture possibilites in the park. Van den Burg et al. (2016)
report that aquaculture activities are not included in the tender and no specific
Fig. 2.9 Installation of the innovative H-frame seaweed farm offshore off Texel (Patent
No. P94437EP00) as well as a seaweed test module. a Launching of the installation in October
2012 with RV Terschelling; b H-frame after launching, total length 120, 10 m wide; c launches of
a test module 15 km out from coast Texel; d mooring by 2 anchors at both ends, 4 yellow buoys
kept the mooring points floating; e work at the mooring in connection with the H-frame during
deployment; f installation work; g side view on the entire installation; h work offshore completed
at the test farm of Noordzeeboerderij off Texel. Images (a, b, d–g) modified after Hortimare
(2016), images c and h by Schuttelaar and Partners, other images are provided by Hortimare
(2016)
2 Offshore and Multi-Use Aquaculture with Extractive Species…
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