Rate Schedule
Public or privately filed pricing schedules, accessorial fee structures and maritime transport terms define the baseline cost of moving containerised and breakbulk cargo across international sea lanes. The published ocean tariff establishes freight classifications, vessel space booking conditions, container demurrage allowances and terminal handling charge schedules across specific trade lanes. Regulatory bodies, such as maritime commissions, oversee tariff filing requirements to ensure pricing transparency and non-discriminatory common carrier practices.
Accessorial Structure
Base port-to-port freight rates listed within an ocean tariff represent only one portion of total maritime shipping charges. Comprehensive rate schedules incorporate accessorial items covering bunker adjustment factors, currency adjustments, peak season charges, low sulfur compliance fees and security surcharges. Shippers negotiating service contracts use the ocean tariff as the default pricing mechanism when spot contract terms lapse or cargo volumes exceed minimum quantity commitments.
Line items for equipment cleaning, hazardous material handling and origin documentation are explicitly itemised within these statutory schedules. Carriers update tariff rules on standard monthly or quarterly intervals to account for changing port terminal expenses and regulatory compliance costs.
Contractual Hierarchy
Ocean carriage contracts reference standard tariff rules for operational definitions, claims procedures and liability limits while superseding baseline freight rates with negotiated spot or seasonal pricing. When volume commitments under negotiated service contracts expire or face termination, the standard ocean tariff governs cargo movement by default. Shippers must examine filed tariff revisions to track impending rate increases across secondary accessorial charges that apply outside negotiated linehaul freight exemptions.