SEA TOOLS

ORB Entry Helper

Draft MARPOL Annex I, Appendix III (ORB Part I) lines and run a self-check before you copy entries into the ship's record book.

How to use

Set gross tonnage, OWS capacity and IOPP tank names with opening ROB and capacity.
Choose the operation code and fill the fields that match your item numbers.
Build formatted lines, copy them, then Add to check log (JSON array) to run self-check rules.
Edit the JSON log directly or paste exported entries — the checker expects valid JSON, not plain text lines.

Example values — edit any field.

Vessel setup

Gross tonnageOWS rated capacity m³/h

IOPP tanks (one per line)

Opening ROB (m³ or t) and capacity (m³) per tank — fuel/lube use tonnes for print. Code H bunkering (26.3/26.4): set opening ROB (t) on HFO/lube tanks here; the checker uses it for totals and capacity.

Tank	Opening ROB	Capacity
SLUDGE TK (P)	m³
BILGE HOLDING TK	m³
FO DRAIN TK	m³
WASTE OIL TK	m³

Entry builder

Date (DD-MON-YYYY)Code letterItem numbersTank(s)QuantityUnitDuration hours (C 12.3 / D 15.1)Port / reception facility (C 12.1 / D 15.2 / H 26.1)Receipt number (C 12.1)Note (C 12.4 only)

Officer in charge signed

Entry log (JSON) — checker

04-OCT-2026 | C | 11.1 | SLUDGE TK (P)
04-OCT-2026 | C | 11.2 | 12.5 m³
04-OCT-2026 | C | 11.3 | 6.2 m³ retained

No issues flagged for this log.

Guidance only. Follow MARPOL Annex I, Appendix III, flag requirements and company SMS.