Figure 7. View of 1,635-kg (1.8-ton) “swiss cheese block” concrete underlayer 
unit 
Figure 8. 2,270-kg (2.5-ton) high-strength concrete units used on harbor side of 
structure 
510-kg (1,125-Ib) concrete units were about 0.9 x 0.6 x 0.3 m (3.0 x 2.0 x 1.0 ft). 
Typical cross sections of the 1994 breakwater construction are presented in Fig- 
ure 9. An aerial view of the harbor breakwater is shown in Figure 10. 
Chapter 1 Introduction 
