Rule 2 in Practice - Special Circumstances

Introduction: The Rule of Total Responsibility

This lesson returns to Rule 2 - Responsibility, the legal and philosophical cornerstone of the entire Navigation Rulebook. As introduced in Lesson 1, this rule functions as a "responsibility sandwich," holding the mariner accountable not only for following the rules but also for departing from them when necessary, and for exercising "good seamanship" at all times.

Understanding Rule 2 is the key to understanding maritime law. It ensures that a mariner can never defend a collision by simply stating, "I was following the rules."

Rule 2(a): "Good Seamanship" and "Special Circumstances"

Rule 2(a) states:

"Nothing in these Rules shall exonerate any vessel, or the owner, master or crew thereof, from the consequences of any neglect to comply with these Rules or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case."

Ordinary Practice of Seamen (Good Seamanship)

This clause legally mandates "common sense" and professional competence. It covers the vast number of situations not explicitly written into the rules.

Example: Conflicting Rules

A power-driven vessel is in a crossing situation with a sailing vessel, which is on the powerboat's starboard side.

• By Rule 15 (Crossing), the powerboat is the stand-on vessel
• By Rule 18 (Hierarchy), the powerboat is the give-way vessel

Which rule applies?

Analysis: This is a "special circumstance." The rules appear to conflict. A prudent seaman would recognize that the more specific rule (Rule 18, which governs interactions between different types of vessels) should take precedence over the more general rule (Rule 15, which applies only to power-driven vessels).

Therefore, the powerboat must give way.

Other Examples of Good Seamanship

Prudent seamanship requires actions beyond the explicit rules:

• Keeping a greater distance from a vessel that is anchored or maneuvering near a dock
• Slowing down in congested harbors, even in clear visibility
• Not anchoring in a position that endangers other vessels
• Anchoring in dense fog if the vessel's radar is inoperable
• Using VHF radio to clarify intentions when situation is unclear
• Posting extra lookouts when navigating near known hazards
• Accounting for environmental conditions like fog, current, or heavy seas

Special Circumstances

This refers to any situation that is "not referenced in the Rules". The rules cannot possibly account for every scenario.

Examples of Special Circumstances

• The presence of more than two vessels in a meeting or crossing situation
• A vessel maneuvering in or out of a berth or slip
• A vessel backing (proceeding astern)
• A vessel that has limitations not covered by NUC or RAM status (e.g., a known slow steering gear)
• Emergency situations (fire, medical emergency, man overboard)
• Search and rescue operations
• Unusual weather or sea conditions

In these cases, Rule 2(a) requires all vessels to act with precaution and good seamanship, falling back on the principles of Rule 8 (positive, early action) to avoid collision.

Rule 2(b): The General Prudential Rule (The "Departure" Clause)

Rule 2(b) is the "escape hatch" that is also an obligation:

"In construing and complying with these Rules due regard shall be had to all dangers of navigation and collision and to any special circumstances, including the limitations of the vessels involved, which may make a departure from these Rules necessary to avoid immediate danger."

This rule is a legal defense for breaking a rule, but it is a defense that can only be used under three strict conditions.

The Three Strict Conditions

1. The Danger Must Be "Immediate"

The rule cannot be invoked to avoid a risk that is still miles away or only a remote possibility. It is for last-minute, "in extremis" situations.

Example: A vessel 5 miles away is not "immediate danger." A vessel 200 yards away on collision course is "immediate danger."

2. The Departure Must Be "Necessary"

The mariner must have no other choice. If a collision can be avoided by complying with the rules (e.g., a simple starboard turn), then a departure (e.g., a port turn) is not "necessary" and is a violation.

Example: If turning starboard would avoid collision, turning port under Rule 2(b) would be a violation.

3. The Purpose Must Be ONLY to "Avoid Danger"

This rule cannot be used for convenience. A mariner cannot depart from Rule 10 (TSS) just to save time on a voyage.

As soon as the immediate danger is past, the vessel must immediately return to full compliance with the rules.

When Rule 2(b) Is NOT a Defense

• "It was easier to break the rule"
• "I wanted to get there faster"
• "I always do it this way"
• "I didn't think anyone would mind"
• "The other vessel should have moved"
• "I had the right-of-way"

Scenario Analysis: Rule 2(b) and Rule 17

The clearest real-world application of Rule 2(b) is its direct integration with Rule 17 (Action by Stand-On Vessel). These two rules work together perfectly to define the responsibilities of the "privileged" vessel.

Revisiting the "Three-Phase Dance"

Let's revisit the "Three-Phase Dance" from Lesson 3, this time through the lens of Rule 2:

Situation: You are the Stand-On vessel. A give-way vessel is on your port side, on a constant bearing.

Phase 1 (Normal) - Compliance

Rule 17(a)(i) commands you to "keep her course and speed".

Here, complying with the rules is the correct and only legal action. Rule 2(a) demands compliance.

Phase 2 (Doubt) - Good Seamanship

Rule 17(a)(ii) says you "may take action" when it becomes apparent the give-way vessel is not acting.

This is the "special circumstance" of Rule 2(a) beginning to develop. Good seamanship now allows you to consider a maneuver. The situation is not yet "immediate danger," but professional judgment suggests precautionary action.

Phase 3 (In Extremis) - Mandatory Departure

Rule 17(b) says you "shall take such action as will best aid to avoid collision" when the vessels are so close that the give-way vessel's action alone is not enough.

This "Phase 3" is the exact moment that Rule 2(b) takes effect:

• The "immediate danger" is now present
• A "departure" from Rule 17(a)(i) ("keep course and speed") is now "necessary"
• Therefore, the stand-on vessel is legally obligated by both Rule 17(b) and Rule 2(b) to break Rule 17(a)(i) and take action

The Fatal Mistake

A stand-on vessel captain who "holds his course and speed" all the way to a collision, protesting "I had the right of way!" is fundamentally wrong.

That captain will be found at fault for:

• Violating Rule 17(b)
• Violating Rule 2(b)
• Failing to take any precaution when faced with immediate danger

This was a key finding in the USS Fitzgerald collision, where the stand-on vessel failed in its "Phase 3" duty.

Real-World Applications

Multiple Vessel Situations

Rule 2(a) "special circumstances" applies when three or more vessels are in close proximity with risk of collision. The standard two-vessel rules may not provide clear guidance.

Good seamanship dictates:

• Slow down significantly
• Use sound signals and radio to communicate
• Take early, defensive action even if you believe you are stand-on
• Ensure all other vessels understand your intentions

Maneuvering Near Docks or Moorings

Vessels maneuvering in tight quarters near docks have limited maneuverability even if not technically "RAM."

Good seamanship dictates:

• Give them wide berth
• Slow down
• Be prepared to stop or reverse
• Do not insist on "right-of-way"

Emergency Situations

Rule 2(b) explicitly allows departure for "immediate danger." Emergency situations qualify:

• Fire aboard
• Medical emergency requiring immediate docking
• Man overboard recovery
• Steering or engine failure

In these cases:

• Use sound signals (five or more short blasts - danger signal)
• Use radio to announce emergency and intentions
• Take whatever action is necessary for safety
• Return to rule compliance as soon as emergency is resolved

Key Takeaways

• Rule 2 is the "responsibility sandwich" - compliance + good seamanship + departure when necessary
• Rule 2(a): Must comply with rules AND use good seamanship and ordinary practice of seamen
• "Following the rules" is NOT sufficient defense if good seamanship was neglected
• Special circumstances: Situations not covered by explicit rules (multiple vessels, tight quarters, emergencies)
• Good seamanship examples: Extra distance from docked vessels, slowing in congestion, radio communication for clarity
• Rule 2(b): Allows departure from rules ONLY under three strict conditions:
  1. Immediate danger exists
  2. Departure is necessary (no other option)
  3. Purpose is solely to avoid danger
• Rule 2(b) is NOT for convenience, speed, or preference
• Must return to full compliance immediately after danger passes
• Rule 2(b) integrates with Rule 17(b): Stand-on vessel Phase 3 action IS Rule 2(b) departure
• Phase 3 failure (holding course into collision) violates both Rule 17(b) AND Rule 2(b)
• "I had right-of-way" is never a defense for collision
• USS Fitzgerald case: Stand-on vessel's failure to depart from rules when in extremis was violation