A a.a Always afloat (Chartering) Abt . About (also abt.) a/c Account (also acct.) A/D Alternate Days After date (also a/d) Ad.val. Ad valorem (Latin – According to value) (also ad. val:A/V) A/H Antwerp, Hamburg range of ports (Chartering) A.T.S.B.E. All Time Saved Both Ends (also a.t.s.b.e.) (Chartering). A.T.S.D.O. All time Saved Discharging Only (also a.t.s.d.o.) (Chart). A.T.S.L.O. All Time Saved Loading Only (also a.t.s.l.o.) (Chartering). A.W.T.S.B.E. All Working Time Saved Both Ends (also a.w.t.s.b.e.) (Chartering) A.W.T.S.D.O. All Working Time Saved Discharging Only (also a.w.t.s.d.o.) (Chartering) A.W.T.S.L.O. All Working Time Saved Loaded Only (also a.w.t.s.l.o.) (Chartering) B bb Ballast Bonus (Chartering). B.B. Bar Bound (Grain Trade): Below Bridges (Chartering): Bulbous Bow (also (BB) – Lloyd’s Register): Bill Book B.B.B. Before Breaking Bulk (Chartering). bends Both ends (Chartering). b.t. Berth terms (Charte