10 LIFE-SAVING APPLIANCES DY5555 IMPA code 33 01 51 Approvals: EC/GL/CCS/SOLAS HUAYAN LIFEBUOY Model DY5555 Outer Diameter 713mm Inner Diameter 445mm Thickness 100 ~ 125mm Weight ≥2.5KG Buoyancy ≥14.5 KG DY5555-4 IMPA code 33 01 54 Approvals: EC/GL/CCS/SOLAS HUAYAN LIFEBUOY Model DY5555-4 Outer Diameter 750mm Inner Diameter 468mm Thickness 100 ~ 125mm Weight ≥4.3KG Buoyancy ≥14.5 KG SB-25 IMPA Code: 33 01 51 Approvals: EC/BV/SOLAS NIHON (JAPAN) LIFEBUOY Model SB-25 Outer Diameter 760mm Inner Diameter 460mm Thickness 105mm Weight 2.8 KG Buoyancy 23 KG Height of Drop Test 40m SB-40 IMPA Code: 33 01 51 Approvals: EC/BV/SOLAS NIHON (JAPAN) LIFEBUOY Model SB-40 Outer Diameter 760mm Inner Diameter 460mm Thickness 105mm Weight 4.5 KG Buoyancy 21 KG Height of Drop Test 40m Lifebuoys