Mark Roundings and Penalties

Mark roundings are among the most critical moments of any regatta. In a few seconds, positions, protests and often the race result are decided. Those who master the Racing Rules of Sailing (RRS) around marks avoid costly penalties and use tactical opportunities deliberately.

This guide explains how to round a mark correctly, which rules apply when mistakes occur, and which penalties you can expect to take yourself or through a protest. It builds on the right-of-way system and complements the Racing Rules of Sailing with the practically relevant area of marks and penalties.

What Mark Roundings Mean

A mark rounding is passing a race mark in the sequence and direction specified by the organiser. Typical courses – such as windward-leeward courses – lead boats past the same or different marks several times. Each mark must be rounded correctly before the boat may sail the next leg or head for the finish.

The course layout is set out in the Notice of Race (NoR) and the Sailing Instructions (SI). There you will find:

• Number and order of marks
• Rounding side (port/starboard, which side to leave the mark on)
• Special requirements (gate marks, slalom, offset marks)
• Organiser penalty options (scoring penalty, alternative penalties)

Sequence of a Correct Mark Rounding

Rule 28: Sailing the Course Correctly

Rule 28 is the central rule for mark roundings. It requires a boat to sail the course as described in the sailing instructions. Specifically, this means:

1. Pass the start correctly (if required)
2. Pass each mark in the correct order and on the correct side
3. Pass the finish correctly (finish line or finish mark)

If a boat misses a mark, passes on the wrong side, or skips a mark, it is not sailing the course. This is not a minor error – without correction or penalty, disqualification is likely.

Typical Rule 28 Violations

• Passing a mark on the wrong side (e.g. port instead of starboard)
• Completely missing a mark and sailing directly to the next leg
• Gate chosen incorrectly (wrong gate at double marks)
• Offset mark or slalom mark overlooked
• After a 360° penalty, correction not fully completed

Correct Rounding in Practice

A clean mark rounding begins long before the layline moment. Crew and helmsperson must know which mark comes next and which side to leave it on.

Preparation Before the Mark

1. Discuss the course plan before the start (read SI, coach briefing)
2. Layline management: not too early, not too late – inshore course regattas depend on precise laylines
3. Anticipate overlap situations: who is inside, who has mark-room?
4. Prepare gate decision: which gate offers a tactical advantage?

The Rounding Itself

At a standard windward mark, the boat passes the mark so that the mark lies on the prescribed side from the boat's perspective. With "leave mark to starboard", the mark lies to starboard of the boat when passing.

Practical example: On a typical WL course, boats sail upwind to the windward mark, leave it to starboard, and then work the leeward gates. If the crew confuses the rounding side, they must either sail back or take a penalty – both cost places.

Rounding Types Compared

Rule 31: Touching Marks

Rule 31 governs touching marks. A boat that touches a mark it is required to pass commits a rule violation – unless it sails correctly around the mark and touches it only unavoidably as part of a correct rounding (rare exception).

What counts as touching?

• Hull, keel, rudder or other parts of the boat touch the mark
• Crew touches the mark (e.g. when pushing off)
• Sail touches the mark (in some cases)

A Rule 31 violation usually triggers a penalty under Rule 44. Those who notice the contact and do not want to risk a protest should take the penalty immediately and clearly visible – still during the race.

Rule 44: Taking Penalties Yourself

Rule 44 allows many rule violations to be penalised during the race without waiting for a protest hearing. This is a central fair-play principle of the RRS.

One-Turn Penalty (360° Penalty)

For most rule violations in Part 2 (When Boats Meet), a 360° penalty is sufficient:

1. Begin a penalty turn immediately after the violation
2. Complete one full turn (360°) – tack and gybe or two tacks/gybes
3. The penalty must be carried out promptly and clearly visible
4. The boat must not retain an unfair advantage during the penalty

Typical occasions for a 360° penalty:

• Rule 10 to Rule 17 violations (right-of-way)
• Rule 31 (mark contact)
• Rule 42 violations (when penalty is prescribed)

Correction for Rule 28 Violations

If a boat has not sailed the course correctly, it must sail back and pass the mark correctly before continuing the race. Simply sailing on without correction almost always leads to disqualification.

Scoring Penalty and Protest Penalties

In addition to the 360° penalty, the rules provide for scoring penalties – percentage additions (often 20% or 30%) or DSQ for serious violations. The jury imposes these in the protest hearing when no boat has taken a self-penalty.

Rule 18 and Mark-Room – Brief Overview

At marks being rounded, Rule 18 (Mark-Room) applies. It governs which boat receives room to pass the mark – even when another right-of-way rule would otherwise apply. Among the requirements is an inside overlap in the zone and sailing the correct course. Rule 18 does not apply at the starting line; at gate marks special rules apply. Rule 18 violations are the most common protest cause at windward and leeward marks in inshore regattas.

Checklist: Mark Rounding Without Penalty

• Sailing instructions read: rounding side of each mark noted
• Course plan discussed with crew (gate choice, offset, slalom)
• Layline sighted in good time, not at the last moment
• Overlap situations clarified before the zone
• No mark contact – no pushing off
• On error: immediate 360° or correction under Rule 28
• Penalty carried out clearly visible and promptly
• When uncertain: protest flag and call "Protest"

Common Mistakes and How to Avoid Them

The most common mistakes at marks:

• Wrong layline – too early (overstand) or too late (Rule 18 conflicts)
• Gate confusion – wrong gate is a Rule 28 violation
• Half-hearted 360° – penalty must be prompt and complete
• Sailing on after Rule 28 error – almost always leads to DSQ

Procedure After a Rule Violation

1. Recognise violation – crew reports the error
2. Decision: 360° penalty or correction under Rule 28
3. Execute penalty – promptly, visibly, completely
4. Continue race – only after penalty/correction is complete

Decision After Mark Error

Frequently Asked Questions

Summary

Mark roundings combine sailing technique, tactics and rule knowledge. Rule 28 ensures the correct course, Rule 31 penalises mark contact, Rule 44 allows fair self-correction – if you act quickly and completely.

Related Topics

• Racing Rules of Sailing
• Basic Rules and Right-of-Way
• Windward-Leeward Courses
• Inshore and Course Regattas
• After the Race: Protest and Result