SAF: Sumitomo Arched Fin 3-5% energy saving and lower the vibration and
noise
DPF: Down Flow Preventing Fin 2% energy saving for VLCC
SILD: Sumitomo Integrated Lammeren Duct 4-7% energy saving
STEP: Spray Tearing Plate: 2-3% energy saving for PCC and Ro/Ro
WAD: Weather Adopted Duct: 4-8% energy saving
