Contents 
[UVSIRIGS ono cess 6 boo. cw ecbd 454 Snag on bo bom dice Gund OID, pola ob clout Vv 
Conversion Factors, Non-SI to SI Units of Measurement .............-.-- vi 
NROGMEMOM 5 osce0cccdcocossedaonoo ono oDaKDcaeHC ODODE ODDO OEDRNL 1 
Work Unit Objective and Monitoring Approach ..............+++-++--- 1 
Project Location and History .......----++++ sees tees eee eee eee 2 
Purposes of the Study ...........---- 22s sete eee tte: 12 
2—Monitoring Plan and Data ..........------s eee eee eee eee tees 13 
/Nmnor Wintkt SURIGYP soc cecoasse cco cdocc soon Boones doco usocODRaESS 13 
Targeting and Ground Surveys ...........+- 2-200 e eee e seer ee eeeees 14 
(Acnalehotocraphymeaen ier eerie eer ttre 21 
Photogrammetric Analysis of Armor Unit Targets .........-----++++-- 22 
Be SUMMTBIAY oo conccc gobs sooosnsesooneasconKsasuE GOED ODDEBOO DEE 26 
IRGUSTINGS odcoadcuocovepooooovcdc su sasddnapano0odoDo Dada bOdCIWCC 28 
Tables 1-5 
SF 298 
List of Figures 
— ee 
Figure 1. Location of American Samoan Islands ..........---+-+++-+++-- 3 
Figure 2. Location of Ofu Harbor ...........- +2. sees eee eens 4 
Figure 3. Original layout of Ofu Harbor, American Samoa .......-..-.-- 5 
Figure 4. Layout of harbor after 1994 rehabilitation ............---+--- 7 
Figure 5. | Tribar armor units used on Ofu Harbor breakwater ..........-- 8 
Figure 6. Concrete rib cap on crest of Ofu Harbor breakwater ..........-- 8 
Figure 7. View of 1,635-kg (1.8-ton) “swiss cheese block” concrete 
INGerlaVerUNIt ener eee tae eel ea 9 
