APPENDIX 145 



ANCHORAGE AREAS 



202.155 (see note A) 



Limits and assigned numbers of anchorage areas 

 are shown in magenta. 



(20) (2OA) (2OB) GENERAL ANCHORAGES 



TEIVIPORARY ANCHORAGE-limited to 72 hours without 

 permit. 



NAVAL ANCHORAGE-commercial vessels may anchor 

 for 24 hours with permission of Captain of the 

 Port. 



^1A)(21B) BARGE and STEAMER ANCHORAGE-limited to 30 days 

 — without permit. 



(23) TEMPORARY GENERAL ANCHORAGE - limited to 48 

 hours without permit. 



24) QUARANTINE ANCHORAGE-vessels shall clear area 

 after being granted pratique. The southern portion 



of ( 23 ) may be used when anchorage ( 24 )is fully 



utilized. 

 (49B) ANCHORAGE FOR EXPLOSIVES-load in excess of 20 

 tons of high explosives prohibited. 



541 



CURRENT DIAGRAM 



GEORGES BANK AND NANTUCKET SHOALS 



Explanation 



Directions and velocities of tidal currents at eighteen stations are shown by arrows. 

 The length of the arrow from the center of the circle represents the average velocity 

 on a scale of one inch equals three knots. The figures at the arrow heads are the 

 hours after the time of maximum flood at Pollock Rip Channel, (Stone Horse Shoal 

 Lightship), the daily predicted times of which are given in the Coast and Geodetic 

 Survey Atlantic Coast Current Tables. The velocities plotted should be increased 

 by 20 per cent when the moon is full or new and decreased by 20 per cent when the 

 moon is in first or third quarters. For effect of wind and tidal currents, see Current 

 Tables, Atlantic Coast. 



541 

 SCALE OF VELOCITIES 



FIGURE 14— Standard Notes 



