Supplementary Data
Date: [2026-05-15]
Revision update: 
figure color schemes have been updated for improved visual clarity and editorial consistency; 
no data or results have been changed.

Date: [2026-04-18]
Revision update: all instances of 'SBCC' have been replaced with 'OCCS'.
1. Overview
This repository contains the anonymized supplementary dataset (Excel workbook) prepared for a manuscript under double-blind peer review.

Files:
- Supplementary_Data.xlsx  (Excel workbook with 8 sheets)
- Source Data file.xlsx  (Excel workbook with 10 sheets)
2. File format
The dataset is provided as a single Excel workbook (.xlsx). It can be opened with Microsoft Excel or LibreOffice.

3. Sheet-by-sheet description
- Supplementary_Data.xlsx  (Excel workbook with 8 sheets)

Sheet: "Supplementary Data 1: Onboard regeneration (for 16 representative routes)"
Purpose: Cost and performance results for onboard regeneration across 16 representative routes.
Structure: Each row corresponds to a route–scenario combination. Columns contain inputs/outputs used in the onboard cost model.
Key fields :
- Route_ID: Identifier for representative route
	- Transportation days per segment (days)
	- Propulsion CO2 emissions per segment (tonne)
	- Daily propulsion-related CO2 emissions (tonne/day)
- Load_limit: CO2 load limit as % of net tonnage (e.g., 10/20/30)
- Capture results for onboard regeneration across 16 representative routes under different load limit (e.g., 10%/20%/30%)
	- Daily additional CO2 emissions (tonne/day)
	- Daily total CO2 emissions (tonne/day)
	- Additional CO2 emissions per segment (tonne)
	- Total CO2 emissions per segment (tonne)
	- Daily CO2 captured (tonne/day)
	- OCCS load per segment (tonne)
	- Capture rate per segment
- Capture results for onboard regeneration under "capture rate at 90%"
	- Additional CO2 emissions per segment (tonne)
	- OCCS load per segment (tonne)
	- OCCS-load-To-ship-net-tonnage ratio per segment
- Storage tank weight under different weight load limit for onboard regeneration scheme
	- Maximum weight of CO2 in tanks (tonne)
	- Volume of ship's storage tank (m3)
	- Tank length (m)
	- Tank diameter (m)
	- Storage tank weight (tonne)
- Storage tank information at 90% capture rate
	-Maximum CO2 captured/voyage (tonne)
	-Volume of tank (V_tank) (m3)
	-Ship's width(m)
	-Tank's length(m)
	-Tank diameter (m)
	-Weight of the storage tank(tonne)

Sheet: "Supplementary Data 2: Onshore regeneration (for 16 representative routes)"
Purpose: Cost and performance results for onshore regeneration across 16 representative routes.
Structure: Each row corresponds to a route–scenario combination. Columns contain inputs/outputs used in the onshore cost model.
Key fields:
- Route_ID: Identifier for representative route
	- Transportation days per segment (days)
	- Propulsion CO2 emissions per segment (tonne)
	- Daily propulsion-related CO2 emissions (tonne/day)
- Load_limit: CO2 load limit as % of net tonnage (e.g., 10/20/30)
- Capture results for onshore regeneration across 16 representative routes under different load limit (e.g., 10%/20%/30%)
	- CO2 captured per segment (tonne)
	- Daily total CO2 emissions (tonne/day)
	- OCCS load per segment (tonne)
	- Capture rate per segment
- Capture results for onshore regeneration under "capture rate at 90%"
	- OCCS load per segment (tonne)
	- OCCS-load-To-ship-net-tonnage ratio per segment

Sheet: "Supplementary Data 3: Unit penalty (UP) across 357 Maersk routes using the DES-based onshore regeneration scheme (US$/tonne CO2)"
Purpose: Route-level unit penalty results for the full set of 357 routes under DES-based onshore regeneration.
Structure: Each row corresponds to a route. Columns provide UP values under multiple scenarios/years/load limits.
Key fields:
- Route_ID: Identifier for representative route
- Load_limit: CO2 load limit as % of net tonnage (e.g., 10/20/30)
- Unit_penalty (UP): Cost per tonne of emitted CO2 [US$/tonne CO2]

Sheet: "Supplementary Data 4: Equipment cost"
Purpose: Equipment cost breakdown used in the cost model.
Key fields:
- Equipment_item: Absorber
	- Z_design (m)
	- D_req (m)
	- Packing(m3)
	- Packing cost(US$)
	- Wvessel(kg)
- Total equipment cost(US$)
- CAPEX: Capital expenditure [US$]
- Equipment cost: Equipment cost per tonne of captured CO2 [US$/tonne CO2]

Sheet: "Supplementary Data 5: Solvent cost"
Purpose: Solvent inventory and make-up costs used in the model.
Key fields:
- Initial_inventory:  Initial solvent cost for different regeneration scheme [US$/tonne CO2]
Notes: [This table provides a breakdown of the initial solvent cost; the make-up solvent cost is reported in Supplementary Note 12.]

Sheet: "Supplementary Data 6: Total cost and unit penalty"
Purpose: Consolidated outputs (total cost and UP) for solvents and scenarios.
Key fields:
- Capture CO2 (tonne)
- Capture cost & components (US$/tonne CO2)
	- Cost of cargo(US$/tonne)
	- Cost of regeneration and liquefaction (US$/tonne)
	- Cost of equipment (US$/tonne)
	- Cost of solvent (US$/tonne)
	- Capture cost (US$/tonne)
- Total cost & components (US$) and Unit Penalty(US$/tonne)
   - under different solvent (MEA/PZ/NE-2/DES) & load limit (e.g., 10%/20%/30%) & year (2030/2040/2050)
	- Cargo Cost(US$)
	- Regeneration and Liquefaction (US$)
	- Equipment Cost (US$)
	- Solvent Cost (US$)
	- Tax-to-pay (US$)
	- Total cost with Carbon Tax (US$)
	- Unit Penalty (US$/tonne)

Sheet: "Supplementary Data 7: ETS-equivalent carbon tax scenarios"
Purpose: Scenario definitions for ETS-equivalent carbon tax settings used in the analysis.
Key fields:
- ETS-equivalent carbon tax	 for every segment
	- location class_code: Ports are classified into four location categories (1–4), representing EU ports, ports in developed regions, ports in developing regions, and ports in other regions, respectively.
	- segment_code: An index (1–16) for segments derived from all pairwise combinations of the four port categories, used to reference the carbon tax applied between each port pair.
- Carbon tax by region:  Summary of ETS-equivalent carbon tax for every route under different years(US$/tonne)
- Total cost & Unit Penalty under ETS-equivalent carbon tax scenarios
	- under different load limit (e.g., 10%/20%/30%)
	- under different solvent (MEA/PZ/NE-2/DES)
	- under different year (2030/2040/2050)

Sheet: "Supplementary Data 8: Flexible offloading strategy"
Purpose: Inputs/outputs related to the flexible offloading strategy under DES onshore regeneration scheme.
Key fields:
- Must-offload ports results and Cargo cost (US$) for flexible offloading strategy under DES onshore regeneration scheme
- Cost metrics for flexible offloading strategy
	- Transportation price (US$/tonne)
	- Optimal load limit
	- Capture Rate
	- Cargo cost (US$/tonne)
	- Equip cost (US$/tonne)
	- Solvent  cost (US$/tonne)
	- Regeneration&Conditioning cost (US$/tonne)
	- Capture cost (US$/tonne)
	- Total cost (US$)& Unit Penalty (US$/tonne) under different years

- Source Data file.xlsx  (Excel workbook with 10 sheets)
	- Fig. 2 | OCCS-load-To-ship-net-tonnage ratios at 90% capture rate.
	- Fig. 3 | Capture cost and capture rate for different routes and regeneration schemes.
	- Fig. 4 | Regeneration scheme selections according to capture cost at 10%, 20% and 30% load limits.
	- Fig. 5 | Total cost of OCCS and unit penalty across 16 routes under future carbon‑tax scenarios.
	- Fig. 6 | Flexible rich-solvent offloading results for the DES-based onshore regeneration scheme.
	- Fig. 7 | Economic viability of the onshore regeneration OCCS scheme across 357 routes.
	- Supplementary Fig. 2 | Capture cost and capture rate for different routes and regeneration schemes at 10% and 30% load limits.
	- Supplementary Fig. 3 | Total cost of OCCS and unit penalty across 16 routes under route-specific ETS-equivalent carbon tax scenarios.
	- Supplementary Fig. 4 | Principal-component projection of 357 container-shipping routes.
	- Supplementary Fig. 5 | COP parameter fitting curve
4. Citation
To be updated upon publication (Zenodo DOI will be provided after acceptance).

5. Contact
For questions during double-blind review, please contact the journal editor handling the manuscript.