Bangladesh has 700 rivers large and small in the Ganges/Padma Delta, the whole place is floating on water. Yes, we make boats and sail them a lot.
Hundreds of years ago - we sent one of our Vanga (Bengal) Kingdom kings (King Vijaya) to Sri Lanka (Sinhala) to establish a Buddhist kingdom. That was the origin of the Sinhala royal bloodline. Vanga also had maritime connections with Burma and Thailand and that is how Buddhism spread there from Bengal.
But yes - we do sail boats, small and large, to transport, to fish, to entertain. The word "Dinghy" is a Bengali word, as are the roots of many maritime English terms. Bengal Built many British Navy vessels which participated in the Battle of Trafalgar.
"Majhee Ray" is a term that means "Hey Majhee". "Majhee" means boatman or boatswain. It is a philosophical term meaning "Mere Maola" who guides your boat (life) through stormy waters. Bangladeshis today are Sunni (Sufi) followers and Sufi philosophy of Islam preaches tolerance rather than militancy in Islam.
Here is a traditional Long-boat race video from Bangladesh which happens around the year. These are similar to Hawaiian/Thai/IndoChina racing boats. This is common across most Asian Buddhist countries where large rivers exist. They are also common in South India.
As far as maritime build traditions - local river transport - local large cargo carriers are built informally without any shipyard support and floated using inflatable rollers, Some of them are as big as coasters which can ply from our coast all the way down to Sri Lanka, along the coast if needed. This one below is a 5000 ton general cargo carrier.
Mine was 2020 figure I believe, yours is one year later.