For a buyer, environmental compliance has moved from the engineering department to the front of the valuation. Two IMO measures — EEXI and CII — now sit alongside age, class and condition as things that decide what a ship is worth and what it will cost to run. Confuse them, or skip them, and you can buy a vessel that looks sound but carries speed restrictions or a retrofit bill within a year or two. Here is what each one means, what a poor rating actually costs, and how to check a candidate before you commit.
EEXI and CII are not the same thing
It is worth being precise, because the two are often run together. EEXI — the Energy Efficiency Existing Ship Index — is a technical, one-off measure: it rates a ship’s design efficiency against a required standard, and a vessel must demonstrate compliance once, typically by the first applicable survey. Many ships meet it through an engine power limitation (EPL) or overridable power limitation. CII — the Carbon Intensity Indicator — is an operational, annual measure: it scores how efficiently a ship actually trades, expressed as a rating from A to E, and the required level tightens every year. A ship can be EEXI-compliant on paper yet drift to a poor CII rating in service.
| EEXI | CII | |
|---|---|---|
| Type | Technical / design | Operational / in-service |
| Frequency | One-off demonstration | Assessed every year |
| Output | Pass / fail vs required index | Rating A to E (tightens yearly) |
| Typical fix | Engine power limitation | Slower steaming, efficiency upgrades, ops |
What a poor CII rating actually costs
A weak rating is not just a letter on a certificate. A ship rated D for three consecutive years, or E for a single year, must develop a corrective action plan as part of its management system — and the practical routes to a better rating all have a price. Slow steaming protects the rating but cuts the earning days; efficiency upgrades and energy-saving devices cost capital and yard time; and in a charter market that increasingly screens on CII, a poorly rated ship can find itself shut out of the better fixtures. All of that flows back into the asset’s value, which is why CII now sits among the core drivers of secondhand value.
How to check compliance before you buy
Treat compliance as a distinct due-diligence stream, not a box-tick. For any candidate, establish three things: the current CII rating and its trajectory over recent years; how the ship meets EEXI (and whether an EPL has been applied, which affects performance); and the status of other environmental kit such as the ballast water treatment system. Much of this is documented and should be confirmed during the pre-purchase inspection and class-record review. A ship trending toward D or E is not necessarily a no — but it must be priced as a ship that will need operational discipline or capital to stay compliant.
New tonnage starts ahead — and stays ahead
This is one reason modern designs command a premium. A recent newbuilding is engineered around current efficiency standards and carries a longer compliance runway, whereas older tonnage is closer to the thresholds as they tighten. It does not mean older ships are uninvestable; it means the compliance horizon has to be part of the hold-period maths. The longer you intend to keep a vessel, the more its CII trajectory matters to the return.
Put compliance in the price
The takeaway for buyers is simple: a good ship at the wrong compliance position is not a bargain, and a fair compliance position is worth paying for. Build EEXI and CII into the valuation the same way you build in survey and steel, and make any compliance gap a point of negotiation rather than a surprise after delivery. This is part of a disciplined buyer’s due-diligence process from end to end. Browse current dry-bulk tonnage on our vessels for sale page, and to assess a specific candidate’s compliance position before you commit, talk to a broker.