Dredging of Berdyansk and Mariupol, Ukraine’s two major Sea of Azov ports, are up for an international tender that closes Jan. 14. This year, three tenders for the $30 million job failed to attract the legal minimums of two participants. Infrastructure Minister Volodymyr Omelyan complained that dredging companies are reluctant to send expensive equipment into the Azov, a binational sea that Russia wants to control. One candidate to deal with the Russians would be China Harbour Engineering Сompany Ltd., a Beijing-based company. Working in the Black Sea, it dredged Yuzhne last year. This year, it is dredging Chornomorsk.