Let's talk about bridges and U-bolts, two essential nautical accessories for fastening, locking, and anchoring on board, used both on and below deck.

🔩 NAUTICAL BRIDGES

Bridges are small metal supports shaped like an inverted "U" that are attached to the bridge or other surfaces.

They are used for:

1. Block and guide tops
2. Attach lightweight accessories (awnings, bungee cords, fenders)
3. Anchor points for elastic bands or cords
4. Sometimes also used to lock doors or curtains

✅ Features

• Fixing with 2 through or self-tapping screws
• Some models have a flat or shaped base for curved surfaces
• Available in AISI 316 stainless steel , reinforced plastic, chromed brass

📏 Common dimensions

• Width: 20 to 50 mm
• Hole spacing: from 15 to 40 mm
• Height: 10 to 25 mm

⛓️ NAUTICAL U-BOLTS

U- bolts (also known as U-bolts or U-clamps ) are “U”-shaped brackets with threads at the ends.

They are used for:

1. Structural fixings (e.g. bollards, eyebolts, turnbuckles, pulpits)
2. Very robust through anchors
3. Heavy duty supports (engines, roll bars, antennas)
4. They can be used with internal reinforcement plates

✅ Types

• Simple U-bolts → only bracket and nuts
• With reinforcement plate → distributes the load better
• Rubberized or PVC coated → to avoid abrasion on pipes and lines
• Round or flat base U-bolts , also inclined for curved surfaces

🛠️ Materials

• AISI 316 stainless steel (marine use, corrosion resistant)
• Galvanized → less expensive but not suitable for long-term use in salt water

✅ Practical advice

• Bridges : also excellent for securing sheets on deck or for blocking tarpaulins .
• U-bolts : always use a counter plate when mounting on fiberglass or wood to avoid deformations.