REGULAR SERIES 



70. F-5-L Flying Boat Hull (E.M.B. Model #2171) - Report of Experiments to 



Determine Effect of Changing Position of Rear Step. Mar 1923. 8 pp., 

 6 figs. 



71. Towing of Vessels at Sea. Apr 1923. 6 pp., 1 fig. 



72. NM-1 Twin Floats - Report of Experiments with Model #2485. Apr 1923. 8 



pp. , 6 figs. 



73. Increase in Frlctional Resistance of Ships Due to Lapped Butts. Mar 1923. 



U pp., 1 fig. 



74. Results of Tests of a Model of the Proposed Floating Dry Dock. Apr 1923. 



21 pp., 17 figs. 



75. UO-1 Seaplane Float - Report of Experiments with Model #2492. Apr 1923. 



9 pp., 6 figs. 



76. Experiments with Models of VT-Twin Floats, Modification #1 and VT-Triple 



Float, Arrangement #2 . Apr 1923. H pp., 8 figs. 



77. Catapult Test, Ordnance Design, Shots 1-2-3-4. Mar 1923. 10 pp., 4 figs. 



78. Catapult Test, Ordnance Design, Shots Nos. 1 to 13 Inc. Apr 1923. 36 pp., 



8 figs. 



79. Preliminary Design No. 25 - Hulls Nos. 1 and 2 - Report of Experiments 



with Model #2497. May 1923. 10 pp., 6 figs. 



80. VT Twin Float Model #2426 - Experiments with and without Hydrovanes. May 



1923. 13 pp., 10 figs. 



81. VT Twin Floats - Modifications #7 and #8 - Experiments with Model No. 



2493. Jun 1923. 9 pp.. 5 figs. 



82. Result of Tests of Models of a Shallow Draft River Gunboat. Jul 1923. 31 



pp., 25 figs. 



83. Kirsten -Boeing Propeller. Oct I923. 



Letter report on TMB file QN/Kirsten-Boeing Company. Oct 1923, Vol. 2. For Official Use Only. 



84. DT Seaplane Floats - Results of Experiments with Modified Lines. Nov 



1923. n pp., 6 figs. 



85. NW Seaplane - Mk I Floats - Experiments with Model #2495. Nov 1923. 8 



pp., 6 figs. 



86. Report of Test of Vertical Steering Control of Cruiser Submarine from 



Experiments with Model No. 251 7. De-c 1923. 8 pp., 6 figs. 



87. Class VS Seaplanes for Small Vessels - Twin Floats Mark I & Mark II - 



E.M.B. Models 25OO & 2514. Dec 1923. 14 pp., 9 figs. 



88. TS Seaplane - Experiments with Model of Mk II Twin Floats (E.M.B. Model 



#2494). Dec 1923. 8 pp., 6 figs. 



89. PN-7 Flying Boat Hull - Experiments with Model No. 2527. Dec 1923. 9 dd 



5 figs. ^ y :^ y'f, 



1-5 



