Northwest required 14 days to meet the terms of the contract . It cost the northwest had to suffer was nearly $10, 000 . But they can claim 4 days out of 14 days ie nearly $2875 as these are the days that they were out of profit and rest 10 days they were not able to load the ship. There is a agreement of sales of goods under Vienna convention as Western Australian Law and sale of goods Vienna convention act 1986 will apply. Here there is no indication of parties opting out in terms of article 6. And the conventions apply when the parties opt out .