SNSUC's crude transshipment book covers seven grades: ESPO, Dubai, Oman, Urals, Basrah Light, Bonny Light and Lula. Today those seven CIF premia are pulled in opposite directions, and the net margin is thinner than a week ago.

The downward force is Brent. The benchmark fell $3.14 to $104.25, dragging down FOB quotes for every cargo anchored to it—Dubai and Oman most of all. The upward force is Asian currency: USD/JPY -0.5441 and USD/KRW -0.4992 today show the yen and won weakening against the dollar, which makes dollar-priced freight and cargo cost more when converted to delivered RMB. The RMB itself rose 0.0865 above 6.71, so the triple stack passively lifts importer RMB cost by roughly 0.13%–0.2%.

The net: cargo value is cheaper, delivered cost is dearer, and margin is squeezed in the middle. On a 100,000-tonne Oman cargo, about 60% of the FOB saving from the Brent drop is eaten by FX and freight, leaving roughly $0.40/bbl less realized margin than at the start of the month. Not a loss—a thin-and-volume game, where only full utilization of turnover and position spreads the fixed cost.

Three operational notes: ESPO and Urals, with different discount structures, are less sensitive to the Brent drop than Dubai and Oman, so rotate those first; Lula and Bonny Light are long-haul grades with high freight share and take the hardest FX hit, so shorten holding cycles; Basrah Light is sulfur-heavy, so fold the CBAM carbon factor into the delivered price before transshipping—do not patch it at customs.