Sovereignty Module: Tie the Line
Tie the Line
Complete Knots, Rigging, Hitches, and Load-Moving Guide
Complete Knots, Rigging, Hitches, and Load-Moving Guide
Rope is useless without knots. The right knot holds under load and releases when needed. The wrong knot slips under stress or jams permanently. This campaign covers essential knots for every situation, rigging for heavy loads, and mechanical advantage systems.
Chapter 1: Essential Knots
| Knot | Type | Use | Strength (% of rope) |
|---|---|---|---|
| Bowline | Loop | Fixed loop that won't slip or jam | 60-75% |
| Clove hitch | Hitch | Attach rope to pole/post (adjustable) | 60-65% |
| Taut-line hitch | Hitch | Adjustable tension (tent lines, guy wires) | 65% |
| Figure-eight | Stopper | Prevents rope from pulling through | 75-80% |
| Figure-eight on a bight | Loop | Strong fixed loop (climbing, rescue) | 75-80% |
| Sheet bend | Bend | Join two ropes (even different sizes) | 45-55% |
| Double fisherman's | Bend | Join two ropes permanently (very secure) | 65-70% |
| Trucker's hitch | Compound | Mechanical advantage for tightening (3:1) | 65-70% |
| Prusik | Friction | Slides when unloaded, grips under load | 55-65% |
| Timber hitch | Hitch | Drag logs, secure bundles | 65-70% |
| Square (reef) knot | Binding | Tie bandages, bundles (NOT for joining ropes under load) | 45% |
| Round turn + two half hitches | Hitch | Secure rope to ring, post, or tree | 60-70% |
Chapter 2: Knot Categories
| Category | Purpose | Examples |
|---|---|---|
| Loops | Create a fixed or adjustable loop in rope | Bowline, figure-eight loop, alpine butterfly |
| Hitches | Attach rope to an object (pole, ring, tree) | Clove hitch, taut-line, timber hitch, rolling hitch |
| Bends | Join two ropes together | Sheet bend, double fisherman's, water knot |
| Stoppers | Prevent rope from passing through a hole | Figure-eight, overhand |
| Binding | Tie around an object to secure it | Square knot, constrictor knot |
| Friction | Grip rope under load, slide when unloaded | Prusik, Klemheist, Blake's hitch |
| Compound | Combine knots for mechanical advantage | Trucker's hitch, Z-drag |
Chapter 3: Mechanical Advantage (Pulley Systems)
| System | Mechanical Advantage | Rope Needed | Complexity |
|---|---|---|---|
| Single fixed pulley | 1:1 (direction change only) | 1x load height | Minimal |
| Single movable pulley | 2:1 | 2x load height | Low |
| Block and tackle (2 pulleys) | 2:1 to 3:1 | 2-3x load height | Low |
| Block and tackle (4 pulleys) | 4:1 | 4x load height | Moderate |
| Z-drag (3:1 with prusiks) | 3:1 | 3x load distance | Moderate |
| Compound system | 6:1 to 9:1 | 6-9x load distance | High |
| Spanish windlass | Variable (high) | Minimal rope | Low |
Rule: Count the number of rope segments supporting the moving block. That number = the mechanical advantage. Trade-off: you pull that many times the distance the load moves.
Chapter 4: Rigging for Heavy Loads
| Equipment | Capacity | Use |
|---|---|---|
| Rope (3/4" manila) | 2,700 lbs (working load, 5:1 safety) | General rigging |
| Rope (1" manila) | 4,860 lbs (working load) | Heavy rigging |
| Chain (3/8" Grade 70) | 6,600 lbs (working load) | Towing, heavy lifting |
| Wire rope (3/8") | 3,000-5,000 lbs (working load) | Permanent rigging, winches |
| Shackle (3/4") | 4,750 lbs (working load) | Connecting rigging components |
| Snatch block | Matches rope/cable rating | Redirect pull, add mechanical advantage |
| Come-along (hand winch) | 1-4 tons | Pulling, tensioning |
| Chain hoist (block and tackle) | 1-10 tons | Vertical lifting |
Safety factor: ALWAYS use 5:1 safety factor for rigging. Working load = breaking strength / 5. Never exceed working load.
Chapter 5: Lashing
| Lash Type | Use | Technique |
|---|---|---|
| Square lashing | Join poles at right angles | Wrap alternating over/under, frapping turns between |
| Diagonal lashing | Join poles at angles (bracing) | Start with timber hitch, wrap diagonally, frap |
| Shear lashing | Join poles side by side (A-frame, shear legs) | Wrap around both poles, frap between |
| Tripod lashing | Three poles for tripod | Wrap all three, spread into tripod |
| Continuous lashing | Attach decking to frame | Continuous figure-eight around frame and plank |
Chapter 6: Rope Care
| Practice | Frequency | Purpose |
|---|---|---|
| Inspect before each use | Every use | Detect wear, cuts, abrasion, rot |
| Keep clean (rinse mud/salt) | After exposure | Prevents fiber degradation |
| Dry before storage | After wet use | Prevents rot (natural fiber) or mildew |
| Store coiled, off ground, dry | Always | Prevents damage |
| Whip or heat-seal cut ends | When cut | Prevents unraveling |
| Retire when: 30% worn, stiff, discolored, or shock-loaded | As needed | Prevents failure |
Reference Card
- Bowline: the king of knots. Fixed loop, won't slip, won't jam, easy to untie
- Trucker's hitch: 3:1 mechanical advantage for tightening loads
- Sheet bend: joins two ropes of different sizes
- Count rope segments supporting the moving block = mechanical advantage
- Safety factor: ALWAYS 5:1 for rigging (working load = breaking strength / 5)
- Square lashing joins poles at right angles; diagonal lashing for bracing
- Prusik knot: slides when unloaded, grips under load (essential for rescue and climbing)
- Retire rope when 30% worn, stiff, discolored, or after any shock loading
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