Secuntv Classificalion 



DOCUMENT CONTROL DATA -R&D 



{Security classification of title, body of abslrnri and indcxint^ annotnfion must he entered when the overall report Is classified) 



1 ORIGINATING ACTIVITY (Corporate author) 



Office of Naval Research 

 Washington, D. C. 



20. REPORT SECURI TV CLASSIFICATION 



Unclassified 



2fc, GROUP 



Not Applicable 



3 REPOR T TITLE 



PROJECT SEALAB REPORT, AN EXPERIMENTAL 45 -DAY UNDERSEA 

 SATURATION DIVE AT 205 FEET 



4. DESCRIPTIVE NOTES fTVpe of report and inclusive dales) 



Summary Report 



5 AUTHOR(S) (First name, middle initial, last name) 



6 REPOR T D A TE 



March 8, 1967 



7a. TOTAL NO, OF PAGES 



434 



7b. NO. OF REFS 



ea. CONTRACT OR GRANT NO- 



b. P ROJ EC T NO. 



9a. ORIGINATOR'S REPORT NUMBER(S) 



ONR Report ACR- 124 



9b. OTHER REPORT NO(S) (Any other numbers that may be assigned 

 this report) 



10- DISTRIBUTION STATEMENT 



Distribution of this document is imlimited. 



II. SUPPLEMENTARY NOTES 



12. SPONSORING MILITARY ACTIVITY 



Department of the Navy 

 (Office of Naval Research) 



13 ABSTRACT 



Sealab n operations conducted by the Office of Naval Research as a part of the 

 man-in-the-sea task of the Deep Submergence Systems Program was an interdisci- 

 plinary investigation into the usefulness of ocean floor habitation by the measurement 

 of the ability of man to do useful work while living as a saturated diver in equilibrium 

 with the ocean- floor pressure. 



Ocean-floor tasks of the 28 Navy divers and civilian scientists included working 

 dives for studying human physiology and performance, experimental salvage tech- 

 niques, biological and physical oceanography, and the evaluation of the undersea 

 habitat and associated diving equipment. 



The Sealab n operation was conducted between Aug. 28 to Oct. 14, 1965, 300 ft 

 off Scripps Pier at La Jolla, California, in a depth of water of 205 ft. Using a syn- 

 thetic breathing gas of helium, oxygen, and nitrogen, each of the three aquanaut teams 

 lived under pressure approximately 15 days in an ocean-floor habitat, making forays 

 into the 48* F, 5 to 30 ft visibility bottom waters for periods ranging from a few min- 

 utes to an extended dive of 3 hours. Excursion no-decompression dives to 266 ft and 

 300 ft were accomplished. Diving from the habitat was accomplished using both semi- 

 closed- circuit breathing apparatus and hookah (habitat- connected- hose) breathing ap- 

 paratus. A decompression complex new to the Navy consisting of a personnel transfer 



(Abstract Continues) 



DD,r:esl473 ^''^^ " 



NO V 65 



S/N 0101.807-660 1 



427 



Security Classification 



