202 



THEORY OF SEAKEEPING 



Exp. NO 18 



Date 



Time 



Position 



/?£//£ 3/ 



0900 -090 3 



ut. 



Lott 



Course 



iZ' 



Sea CondiXior,s 



heater- 



\u- J \ Bf 1 11 fort Settle 

 I Relative Vel 



\Sea 



\ Swell 



Wave < Unjtk 



; H eisht 



Temp 



\_PenDcl _ 

 1 Sea iva t ef 

 Atmosphere 



itm Pressure (mt) 



J^^ 



IV s 



6S^-/sc'. P-130' 



f-:od. -p-140' 



30 w 



/.j-m 



^S^ 



Sketches of Waves 



\xj^h 



■'l 



I 





Remarks 



80 



too 120 f40 160 /8 



Q) Speed 



Sal-Log ■o 



Q)RtY0lut 



© Yawing 



©Encounitr fm-rlO'F 

 marks t 



®Pitckillj oXc- 



and -r 



Heaving t 



■Si^WAr/0'P 



io- 

 c 



®/follmg 



®Stres 



d^o'P 



©Relative t 



Wind Direction z ' 



r2o7s ^acr 



(ibRelative 

 Wmii Speed 



iO iO lOO 120 



Time in Seconds 



Fig. 4 5 An example of consolidated graph of simultaneously measured data (from Experiment Tank Committee 



of Japan, 1954) 



