• SAR
• SART
• Scuppers
• Seacock
• Sea Room
• Securitay
• Set Sail
• Shackle
• Sheet
• Shroud
• Skin Fitting
• SOG
• SOLAS
• Spar
• Spinnaker
• Splice
• Spreaders
• Stall
• Stanchion
• Standing Rigging
• Starboard
• Starboard Tack
• Stay
• Steerage Way
• Sternway
• Strop