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Despatch: ATS vs AWTS comparison

Compare despatch payable under 'all time saved' (ATS) vs 'all working time saved' (AWTS) conventions. The two methods can differ substantially when significant time has been excluded from laytime.

CharteringDespatchATSAWTS

Laytime allowedhElapsed clock hours (commencement to completion)hExcluded hours (SHEX, weather, breakdown)hDespatch rateUSD/d

ATS despatch

22,500USD

AWTS despatch

27,500USD

Difference (AWTS minus ATS)

5,000USD

Formula

English law default is AWTS; US law default has been ATS in some Gulf trades. Best practice is to specify the convention explicitly in the despatch clause.