Russian shipbuilder Krasnoye Sormovo has posted a steep rise in earnings as revenue jumped.

Net profit in the first three months was RUB 345.9m ($6.14m), compared to RUB 56.4m a year ago.

Revenue rose to RUB 2.18bn from RUB 1.26bn over the same period.

In January, the yard clinched two new contracts to build five tankers and five bulkers.

It will hand over the vessels this year and in 2018.