Maritime formula reference

IMO — Design phase

EEDI, EEXI, EPL, ShaPoLi, minimum propulsion power, and the correction factors used in MEPC.328(76).

• EEDI Attained (MEPC.328(76))
• EEDI Required (MEPC.328(76))
• EEDI Reference Line
• EEXI Attained (MEPC.328(76))
• EEXI Required (MEPC.328(76))
• EPL - Engine Power Limitation
• ShaPoLi - Shaft Power Limitation
• Minimum Propulsion Power

IMO — Operational

CII (all variants), AER, EEOI, cgDIST, the SEEMP regime, and the IMO DCS reporting framework.

• CII Attained (MEPC.336(76))
• CII Required (MEPC.337(76), MEPC.338(76))
• CII Rating (MEPC.339(76))
• AER - Annual Efficiency Ratio
• EEOI - Energy Efficiency Operational Indicator
• cgDIST - CO₂ per gross-tonnage nautical mile
• IMO DCS Annual Report
• SEEMP Part I Measure Evaluator

EU / UK / Regional

EU MRV, EU ETS, FuelEU, UK ETS, CARB, and the Norway NOx Fund regime.

• EU MRV to EU ETS Allowance Crosswalk
• ECA Fuel-Cost Premium

IMO Net-Zero Framework

GFI attained vs required, fuel-mix correction, and the new MEPC.83 net-zero pricing mechanism.

• GFI Attained - WtW Intensity from Fuel Mix
• GFI Compliance - IMO Net-Zero Framework
• CII Fuel Mix Correction

Marine fuels

Cf conversion factors, lower calorific values, well-to-wake intensities, and density correction.

• Fuel Cf conversion factors (MEPC.364(79))

Pollutants and ECA

ECA fuel-cost premium, NOx Tier I/II/III compliance, and short-lived climate forcers.

• ECA Fuel-Cost Premium
• NOx Tier Compliance Check
• Black Carbon

Stability and naval architecture

Hydrostatics, intact and damage stability, trim, list, and the geometric ratios behind ship design.

Propulsion and resistance

Holtrop-Mennen, propeller open-water, shaft efficiency, and Admiralty power coefficient.

• Admiralty Coefficient Power
• ITTC-57 Friction Coefficient

Class notations

Eligibility and survey-scope checks for ABS, DNV, LR, BV, ClassNK, and RINA notations.

• ABS ENVIRO / ENVIRO+
• ABS ENVIRO+ Extras
• ABS - ACCU (Unattended machinery)
• ABS - AMS (Automated machinery)

Voyage and operations

Anchor scope, anchor holding power, and other voyage-and-anchorage operational checks.

• Anchor Scope - Chain Length Requirement
• Anchor Holding Power - Wilson / Stevens
• Anchor Chain - Horizontal Tension & Sag

Lifecycle and economics

Asset depreciation, antifouling depletion, and lifecycle-cost-related references.

• Shipping - Asset Depreciation Schedule
• Antifouling Paint - Depletion Rate
• Hull Cleaning - ROI Estimate