Open AccessTechnical Review of Bollard Pull Calculation to Support Shuttle Tanker from Spread Mooring System FSO
Author(s) -
I Made Ariana,
Fadilla Indrayuni Prastyasari,
R. R. Putera
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1052/1/012027
Subject(s) - turret , marine engineering , towing , mooring , space shuttle , engineering , surge , port (circuit theory) , aerospace engineering , mechanical engineering , electrical engineering
An FSO was designed with Spread Mooring System to substitute the former FSO whose mooring system was designed with Turret Mooring System. Theoretically, the environmental loads affecting the shuttle tanker when the crude oil transfer process from FSO is undergone, it will have a bigger number and require a bigger bollard pull specification of the AHTS vessels to assist the shuttle tanker in place. It is due to the weathervane flexibility that is adjusted to the heading direction of either the FSO or shuttle tanker which found in Turret Mooring System is absent in Spread Mooring System. The calculation of environmental loads in this research is conducted using recommendation from DNV-GL and wind, wave, current, and inertia loads are taken into accounts. The biggest transversal environmental load is recorded by the magnitude of 262.96 MT towards positive vector. Whilst the biggest longitudinal environmental load is recorded by the magnitude of 105.44 MT towards negative vectors. By considering safety factor, age, efficiency, and towing configuration of the AHTS vessels, the recommended specification of the AHTS vessels configuration are the 200 MT AHTS vessel in stern of the shuttle tanker and 220 MT AHTS vessel in port side or starboard side of the shuttle tanker.