Page 39 - Sayı-08

FORMAL SAFETY ASSESSMENT OF OFFSHORE 37
SUPPORT VESSELS

3. Framework of Risk Assessment

After the identification of operational phases and assumptions of a life cycle for Offshore Support
Vessel, base framework has been obtained for such vessel type. Now, it is possible and convenient
to proceed step 1 of formal safety assessment (FSA). This paper's ship type is included in service
ships as given below. Following assessment have been carried out for step 1 hazard identification.
As for beginning of hazard identification, historical data has been examined. Below Fig. 2
accidents by ship category has been given. In Fig. 3, distribution of casualties by their type has
been given. Another important data has been given in Fig. 4 which defines casualties for ships
interacted with another ships. Considering this paper is based on OSVs, these kind of data is
making the base point for hazard study.

Fig. 2. Between 2011-2014 accidents by ship category [10]

Fig. 3. Distribution of casualties and numbers [10]

Sayı 6, 2016 GiDB|DERGi