Many of today's developed countries started shipbuilding before they started industrialization in heavy engineering. A shipbuilding requires technologies that include steel plate cutting , bending, curving, twisting and welding according to the drawings
Now, consider a machine, any machine. Other than the electric/electronic components, a machine is built of cut and weld steel plates. To manufacture these machines a minute precision technology is needed. So, a shipbuilding experience is many steps forward in the way to build heavy machines.
In case of Japan (and probably many other countries including South Korea), there are companies like IHI, MHI, Hitachi Shipbuilding Co., and Mitsui Shipbuilding Co., who gained experince in this sector and then moved to heavy engineering that includes not only heavy machines, but also train coach/engine, rly freight coach and things like these.
I firmly believe that Ananda as well as other shipbuilding Companies' present initiatives are correct. When they accumulate enough experience and also some machine design companies spring up, they will combine their knowhows, and will be able to manufacture engineering goods, which is a pre-requisite for expansion into heavy industrialization.
By the way, India is already producing many of its own machines. So, this has become the big strength of India. Unless BD produces many of its capital goods, there is no way BD can get out of LDC status. Only stitching fabrics is not enough to bring about a stronger economy.
Sorry for the long post.