What is class-specific equipment in Sailing?

Section 2: Equipment

Hull: Must conform to class measurement certificates. Hull shape, weight (including corrector weights), and flotation are verified before the regatta.
Sails: Each class has prescribed sail dimensions and materials. Olympic classes typically allow only event-issued sails (marked and measured) to prevent material advantages. Sail numbers must be clearly displayed.
Foils (keel/daggerboard, rudder): Must comply with class rules. Foiling classes (Nacra 17, iQFOiL, Formula Kite) have specific foil profile and area restrictions.
Standing and running rigging: Mast, boom, shrouds, and control lines must be class-legal. No non-standard materials or modifications.

Personal Flotation Device (PFD): Mandatory at all times while on the water. Minimum buoyancy of 50 N (ISO 12402-5) or per class-specific requirements.
Knife / line cutter: Required to cut rigging in entrapment emergencies.
Whistle: Attached to the PFD for attracting attention.
VHF radio: Required in keelboat and offshore classes. Optional but recommended for dinghy classes.

Trapeze harness: Required in 49er/49erFX and 470 classes. Allows crew to extend body weight outboard for balance.
Helmet: Mandatory for Formula Kite and iQFOiL at certain wind speeds due to foiling speeds.
Impact vest: Recommended for foiling classes where speeds can exceed 30 knots and crashes involve high forces.
Bailer / pump: Required in all dinghy classes to remove water from the cockpit.

Hull: Must conform to class measurement certificates. Hull shape, weight (including corrector weights), and flotation are verified before the regatta.
Sails: Each class has prescribed sail dimensions and materials. Olympic classes typically allow only event-issued sails (marked and measured) to prevent material advantages. Sail numbers must be clearly displayed.
Foils (keel/daggerboard, rudder): Must comply with class rules. Foiling classes (Nacra 17, iQFOiL, Formula Kite) have specific foil profile and area restrictions.
Standing and running rigging: Mast, boom, shrouds, and control lines must be class-legal. No non-standard materials or modifications.

Personal Flotation Device (PFD): Mandatory at all times while on the water. Minimum buoyancy of 50 N (ISO 12402-5) or per class-specific requirements.
Knife / line cutter: Required to cut rigging in entrapment emergencies.
Whistle: Attached to the PFD for attracting attention.
VHF radio: Required in keelboat and offshore classes. Optional but recommended for dinghy classes.

Trapeze harness: Required in 49er/49erFX and 470 classes. Allows crew to extend body weight outboard for balance.
Helmet: Mandatory for Formula Kite and iQFOiL at certain wind speeds due to foiling speeds.
Impact vest: Recommended for foiling classes where speeds can exceed 30 knots and crashes involve high forces.
Bailer / pump: Required in all dinghy classes to remove water from the cockpit.