Recent Changes in Ferry Hull Form Design and their impact on Seakeeping

An analysis of historical trends in the hull form and main proportions of ferries shows distinct trends in some respects. These trends and the increased stability due to new safety regulations affect the performance in waves.
To quantify these effects a systematic series of ships was Investigated and subjected to an operability analysis. The results identtfy key Issues in the performance of ferries in waves. They show that withln the normal range of snip proportions, huil form and stabilizer arrangements, marked differences In performance can be expected.