Sizing anchor rode and chains involves selecting the appropriate diameter and length based on boat size and anchoring conditions. The chain's weight and strength must match the vessel's displacement and expected loads. Proper sizing ensures secure holding power and reduces dragging risks in various seabed conditions.

Size: Typically ranges from 1/4 inch to 2 inches in diameter, depending on vessel size and application.

Grade: Common grades include Grade 2, Grade 3, and High-Test (HT) for chains, with tensile strengths ranging from 30,000 psi to over 100,000 psi.

Viscosity: Not applicable to anchor chains or rode; viscosity is a fluid property.

Buoyancy: Chains are negatively buoyant (sink in water), while nylon or polyester rodes may have slight positive buoyancy.

Material: Chains are typically made of galvanized or stainless steel; anchor rodes can be chain, nylon, polyester, or a combination (composite rode).

Breaking Strength: Varies by size and grade, e.g., a 1/2-inch Grade 3 chain may have a breaking strength of ~47,000 lbs.

Corrosion Resistance: Galvanized or stainless steel chains offer varying levels of corrosion resistance.

Weight: Chain weight is typically measured in lbs/ft, e.g., 1/2-inch chain weighs ~1.4 lbs/ft.

Elongation: Nylon rodes exhibit high elasticity (~20-30%), while chains have minimal elongation.

Standards: Complies with ISO 4565, ABS, or other maritime classification society standards.