which graphs the wave spectrum will be changed to a type which 
will present a larger and more detailed spectrum. This particular type of 
recorder is in short supply and it will not be available until mid-October 
Thus the wave analyser in final form should be completed by mid-November. 
V. The Agricultural and Mechanical College of Texas, Contract No. 
DA-49-055-eng-18, Quarterly Report for period ending 31 July 1953. 
At the end of the first 13 months of the extended contract, Project 50 
was renewed for 12 additional months and the title was changed to “Wave 
Energy Losses in Shallow Water Ocean Waves". 
During the quarter, May 1, 1953 to July 31, 1953 the following progress 
was made: 
1. Planning of Operations. As a result of the gas well fire at Pure 
Oil structure A, all Research Foundation instruments, including the pressure 
head wave recorders were removed from structure A and also structure B. 
Permission was sought and obtained from the Sun Oil Company, to reinstall 
the above mentioned instruments on the Sun Oil Pier, located about 18 miles 
east of Galveston. This pier extends 2600 feet into the Gulf. An instru- 
ment shack sponsored by other Research Foundation projects was constructed 
at the end of the Sun Oil Pier. (The electrical wiring of the shack has 
been completed and actual installation of Research Foundation instrumenta- 
tion will soon begin). 
During the first week of July permission was obtained from the Pure 
O0il Corporation to reinstall a wave recorder at structure A and also one at 
structure B. 
Since this project has three pressure type wave recorders and four 
ideal sites for installation, it was planned to install permanently, one 
wave recorder at Pure Gil Structure A, and also one at the seaward end of 
Sun Oil pier. Jt is planned to alternate periodically the installation of 
the third wave recorder between Pure Oil structure B and the shoreward end 
of the Sun Oil pier. 
2. Field Operations. Actual field operations were resumed at Pure Oil 
structures A and B during the third week of July. One pressure head support 
and pressure head was installed permanently at structure A and the second 
one was installed at structure B. 
3. Interim Technical Report. Work was continued on the Technical 
Report "Change in Wave tleight due to Bottom Friction, Percolation and 
Refraction", Originally it had been intended to complete this report by 
1 May 1953. However, additional graphs and examples are being included in 
order that the report be more complete. It is now anticipated that the 
report will be released within 30 days. 
4, Theoretical Investigations. A theoretical investigation of the 
effect of bottom fluctuations on the change in wave height has been in- 
itiated. 
ly 
