catalog of prefabricated
coastal protection
units

${\displaystyle {\frac {H_{s}}{\Delta \cdot d_{n50}}}={\sqrt[{3}]{K_{d}cos\alpha }}}$

Year	2005
Inventor	Arnoud Van Den Berge; Jan Sebastiaan Reedijk; Rolf Rainer Canto
Country	Netherlands
Company	Delta Marine Consultants (Koninklijke BAM groep NV)
Layer coefficient kΔ	1.4
Shape coefficient ks	0.333
Stability number kd	13 (head) 16 (trunk)
Preferred design formula	Use Hudson formula with appropriate kd value
Application	single layer, random placement
Application range	large waves
Patent	EP1904687B1
Trademark	"Xbloc" is an registered trademark, owned by DMC/Koninklijke BAM
Wikipedia pages	EN - NL - ES

• The name Xbloc may only be used with a license from the license owner: DMC/BAM groep