What carabiners are used for a Bowline on a Bight hookup?

• A. Supersafe carabiner or 2 x-gated screwgates
• B. Only standard locking carabiners
• C. Only non-locking carabiners
• D. Any carabiner

Answer: (A)

When tying a Bowline on a Bight hookup, you’re creating two load-bearing attachment points that must stay secure under tension. That makes locking hardware essential to prevent the knots from loosening or the gates from opening if the system shifts or is bumped. Using either a single high-security carabiner (like a Supersafe) or two locking carabiners with screw gates gives the needed security and redundancy: the single specialist carabiner is built to resist accidental opening, while two locking carabiners ensure both loops remain clamped and protected from unintended unclipping.

Non-locking carabiners can open under load, compromising the hookup; relying only on standard locking carabiners can leave you with insufficient redundancy for two separate attachment points; and any carabiner isn’t appropriate because it may not provide the locking security or rating needed for a Bowline on a Bight hookup.