Oil Record Book codes

The "Oil Record Book Part I — code finder" is for the engineer with the pen in hand. Pick what you did, in plain words, and the page shows the code letter, the item numbers and the shape of the entry, line by line, with placeholders where your own figures go. Part I is the machinery-space book: sludge, bilge water, bunkers, the oily-water separator and spills.

The code letters and item numbers follow MARPOL Annex I and the IMO guidance on recording operations. The wording of the entries is SeaReady’s own; the printed book, the IMO guidance and your flag’s instructions are the authority.

Everyone, on every plan including Free. It is written for the engineer officers who make the entries and the Chief Engineer who signs them. Nothing is saved: it is a reference you read, not a form you fill in.

1. Open "Oil Record Book codes" from the Tools page. The operations are listed in groups: "Sludge & residues", "Bilge water", "Bunkering", "Equipment & failures", "Fuel tanks & ballast", "Spills" and "Other". Each shows its code, for example "C 11.1–11.3".
2. Type a word in the search box (for example sludge, bilge, bunker, incinerator or 15 ppm) to shorten the list, or scroll and tap the operation you did.
3. Read the table: "Date", "Code", "Item" and "Record of operation". The record column shows the shape of each line, with your own figures to fill in where you see angle brackets (tank name, quantity, times). The note under the table reminds you that the officer in charge signs the operation and the Master signs each completed page.
4. Read the tips under the table: the traps for that operation, such as matching tank names to the IOPP Supplement or keeping the reception facility receipt.
5. Tap "Copy template" to copy the lines to the phone’s clipboard, or "Choose another operation" to go back.
6. Tap "All code letters and item numbers" at the bottom for the full list of codes A to I with every item number.

• Tank names must match the IOPP Supplement exactly. This is the first thing a port State officer compares.
• The weekly sludge entry (C 11.1 to 11.3) lists every oil-residue tank, including tanks that are empty.
• Never erase or tear out a page. Strike through with a single line, sign and date, then write the correction under code I: the "Correcting a wrong entry or making a late entry" operation shows the shape.

• Port State officers read the Oil Record Book against the IOPP Supplement, the tank capacities, the bunker delivery notes and the reception-facility receipts. Quantities that do not add up across weeks are what they look for.
• They check that the times in the book agree with the oil content meter record, that discharges were made where they are allowed, and that corrections are a neat single-line strike-through with a signed code I entry, never an erasure or a missing page.

• Works offline. Nothing you look up is saved and nothing is sent anywhere. "Copy template" needs a browser that allows copying; if it fails, select the text instead.
• Covers Part I (machinery spaces) only. The Cargo Record Book and Part II for tankers are not included.
• A finder, not a checker: it does not read or check what you wrote in the book, and it does not replace your company’s Oil Record Book procedure or a flag circular.