nav rules added

personal/noah/maritime/navigation_rules.md

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+[US Coast Guard Navigation Rules](https://www.navcen.uscg.gov/sites/default/files/pdf/navRules/navrules.pdf)
+
+Here is a step-by-step outline of the major topics covered in the provided material:
+
+I. Introduction
+   A. International Rules
+   B. Inland Rules
+
+II. Part A - General
+    A. Rule 1: Application
+    B. Rule 2: Responsibility 
+    C. Rule 3: General Definitions
+
+III. Part B - Steering and Sailing Rules
+     A. Section I - Conduct of Vessels in Any Condition of Visibility
+        1. Rule 4: Application
+        2. Rule 5: Look-out
+        3. Rule 6: Safe Speed
+        4. Rule 7: Risk of Collision
+        5. Rule 8: Action to Avoid Collision
+        6. Rule 9: Narrow Channels
+        7. Rule 10: Traffic Separation Schemes
+     B. Section II - Conduct of Vessels in Sight of One Another  
+        1. Rule 11: Application
+        2. Rule 12: Sailing Vessels
+        3. Rule 13: Overtaking
+        4. Rule 14: Head-on Situation
+        5. Rule 15: Crossing Situation
+        6. Rule 16: Action by Give-way Vessel
+        7. Rule 17: Action by Stand-on Vessel
+        8. Rule 18: Responsibilities Between Vessels
+     C. Section III - Conduct of Vessels in Restricted Visibility
+        1. Rule 19: Conduct of Vessels in Restricted Visibility
+
+IV. Part C - Lights and Shapes
+    A. Rule 20: Application
+    B. Rule 21: Definitions
+    C. Rule 22: Visibility of Lights
+    D. Rule 23: Power-driven Vessels Underway
+    E. Rule 24: Towing and Pushing
+    F. Rule 25: Sailing Vessels Underway and Vessels Under Oars
+    G. Rule 26: Fishing Vessels
+    H. Rule 27: Vessels Not Under Command or Restricted in Their Ability to Maneuver
+    I. Rule 28: Vessels Constrained by Their Draft
+    J. Rule 29: Pilot Vessels 
+    K. Rule 30: Anchored Vessels and Vessels Aground
+    L. Rule 31: Seaplanes
+
+V. Part D - Sound and Light Signals
+   A. Rule 32: Definitions
+   B. Rule 33: Equipment for Sound Signals
+   C. Rule 34: Maneuvering and Warning Signals
+   D. Rule 35: Sound Signals in Restricted Visibility
+   E. Rule 36: Signals to Attract Attention
+   F. Rule 37: Distress Signals
+
+VI. Part E - Exemptions
+    A. Rule 38: Exemptions
+    B. Annex I: Positioning and Technical Details of Lights and Shapes 
+    C. Annex II: Additional Signals for Fishing Vessels Fishing in Close Proximity
+    D. Annex III: Technical Details of Sound Signal Appliances
+    E. Annex IV: Distress Signals
+    F. Annex V: Pilot Rules  
+
+VII. Other Regulations
+     A. Interpretative Rules
+     B. COLREGS Demarcation Lines
+     C. Penalty Provisions 
+     D. Alternative Compliance
+     E. Waters Specified by the Secretary 
+     F. Vessel Bridge-to-Bridge Radiotelephone Regulations
+