Complex sentence: In 1861, the consignees offered a premium of 10s per ton to the first ship to dock in London, which was won by the Fiery Cross, a ship that won this prize in 1862,1863 and 1865 as well.
Split into simpler sentences: In 1861, the consignees offered a premium of 10s per ton to the first ship to dock in London. This was won by the Fiery Cross, also winning in 1862,1863 and 1865 as well.