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Encyclopedia of Marine and Energy Technology

Tank Arrangement Plan (TAP)


A very important drawing that shows the position and the data of all ship tanks. To avoid misunderstandings, the TAP must contain a sufficient number of views and cross sections. It shall be framed and posted on the Bridge and in the Ship Office.

Each tank must be defined by a full name and a code which must be used in the same form on all drawings and in all ship documents. Codes must be short and will be welded on shell plating, manhole covers, etc. It is recommended to use standard tank names and codes. See also Tank Space Information.

Explanation of columns names

Ad. 1. Number of the row.

Ad. 2. Code of the tank that shall to be used on all drawings, name plates, manholes, etc.

Ad. 3. Full name of the tank.

Ad. 4. Location of the tank.

Ad. 5. Volume (m3) of the tank.

Ad. 6. Mass of Heavy Fuel Oil, (HFO) with given specific gravity (t/m3).

Ad. 7. Mass of Marine Diesel Oil, (MDO) with given specific gravity (t/m3).

Ad. 8. Mass of Lubrication Oil, (LO) with given specific gravity (t/m3).

Ad. 9. Ballast Water, (BW) with given specific gravity (t/m3).

Ad. 10. Fresh Water, (FW) with given specific gravity (t/m3).

Ad. 11. Other Tanks, (OT).

Ad. 12. Vertical Centre of Gravity from Base Line (m).

Ad. 13. Longitudinal Centre of Gravity from After Perpendicular (m).

Ad. 14. Transverse Centre of Gravity from Centre Line (m).

Ad. 15. Maximum Free Surface Moment (tm).

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