Answer
1.To provide level playing field for ship owners who wanted to provide good working conditions for seaferers 2.There were many conventions, so difficult to implement also they were outdated so updating them was very difficult.
3.Shipping is the worlds first genuinely global industry
4.Joint resolution by international seafarers, ship owners organization and governments.
5.Requested ILO to consolidate texts ( earlier there were 69 ILO conventions ) as it was difficult for the governments to ratify and enforce all standards.
6.Many of these 37 were out of date and didn't focus on living conditions and a more effective enforcement and compliance system was needed to eliminate substandard ships.
7.It was a fourth pillar of IMO.