One builder still exists in the town, Parkol Marine, which up to 2019 had constructed over 40 trawlers and other ships, mainly for the fishing industry along the Yorkshire coast, and other businesses in the north-east of Scotland.
[5] Whitby has had a fishing fleet since at least the 14th century,[6] but the growth in larger shipping both entering and being built in the harbour, was driven by the local alum industry that had several processing sites along the coast of Yorkshire.
This story relates that Sir Thomas Chaloner visited the alum works owned by the Pope and recognised that the same rocks existed beneath his estate in Guisborough, North Yorkshire.
[18] Also, vessels registered to the ports of London and Newcastle in 1626 are described as having been built in Whitby, with one ship, The Pelican, weighing 170 tonnes (190 tons), being constructed by Henry Potter and Christopher Bagwith.
"[21] Shipbuilding on an industrial scale seems to have commenced around 1717, when Jarvis Coates launched William and Jane, a three-masted vessel weighing 237 tonnes (261 tons).
[29] The Cat's shallow draught allowed them to beach and unload their cargo whilst stranded and be refloated come high tide.
[33] Cook was known to be familiar with these ships, having served on board several cats and barks as part of his apprenticeship during his early days in Whitby.
)[37] Whilst most of these were located on the side of the shipyards or the water, one, owned by Campion was situated in the upper part of Bagdale and produced a special type of sailcloth which did not use starch in its preparation as most other manufacturers did.
[40] But as the Gulf of Riga traditionally froze over winter, many Whitby ships were in for repair, which led to an increase in the number of dry docks in the harbour area.
[41] The winter work that was carried out on the vessels was a lucrative sideline to the shipbuilders, as in the latter part of the 17th century, this brought in around £2,200 to the port every year.
[42] Timber was originally sourced from Yorkshire, probably from the Vale of Pickering area, and it required a good number of oak trees per each ship built.
[43] As Whitby was isolated from the rest of Yorkshire by its surrounding moorland, transportation of the oaks was problematic as it took an old route over Lockton High Moor.
[55] The last years of building ships into the early twentieth century, saw their displacement rated at over 5,700 tonnes (6,300 tons), which was proving too much for the width available at the swing bridge in Whitby.
[56] Even though the swing bridge was replaced in 1909,[57] with a width of 70 feet (21 m),[58][note 4] it was too late for the shipbuilding industry as the skilled workers made redundant from Turnbull and Son, went off to work in other shipyards away from the River Esk and Whitby.
[62] Another cause for the loss of the shipbuilding business was that by the turn of the 20th century, steel and iron were the materials that ships were mostly made from, and Whitby could not compete with shipyards on the Tyne, Tees and Humber rivers who had a plentiful supply of metals on their doorstep.
Many of the shipyards on the western bank of the River Esk have been lost, first under the railway, and during the latter half of the twentieth century, to a supermarket and marina development.
Some yards possibly also diversified into ship breaking, with one breakers known as Clarkson's operating between 1919 and 1921, though it is unknown if this is the same family who went on to make cobles between the 1930s and the 1970s.
In addition to the above, minor concerns that were in business for a short time (typically less than three years) were; Jonathan Lacey (1800–1803), Reynolds & Co. (1790) and William Simpson (1760).