On completion of Level 4, the student should be able to execute all maneuvers learned previously within a competitive fleet. Should be able to formulate strategies to maximize their speed around the course and apply the standard racing rules in tactical interactions with other boats. At this level, the student should be a confident, though probably unseasoned, racing skipper or crew on most (non-foiling) boat types under 30ft.
| Level 4 | Intermediate Racing |
| Rules of the road | Room, mark roundings, RRS 15-20, protests |
| Boat Handling | Demonstrate proper gears during start from a luffing stop; layline judgment |
| Starting theory | Start sequence; sight lines; favored end, advantages to stbd and port tack approaches |
| Starting practical | Demonstrate luffing start, timed stbd tack, crossing within 10 sec |
| Strategy | Recognize favored side of course, account for tides/currents |
| Tactics | Demonstrate application of basic right-of-way rules |
| Strategy theory | VMG, persistent vs oscillating shifts |
| Strategy practical | Windward mark approach, leeward mark approach |
| Tactics theory & practical | Shifts, covering, splitting, blanketing, pinning, inside overlaps, pinching, footing, tack or cross |
| Nomenclature | Mark zone, pinwheel, wind shadow, velocity shifts |
| Alternative racing | One-design vs mixed fleet tactics, team racing, match racing |