Ireland issued in 1987 one stamp which shows us three sailing vessels, which are Irish galleys.
On the stamp issue is given:
Chamber of Commerce: On 30th. March 1787, on instructions from a meeting of Waterford's merchants and traders, an association which was to become known as the Chamber of Commerce of the city of Waterford was formed and a committee laid down the rules and procedure which were to be adopted from then on for the continuance of the association.It would appear from early records that the Chamber was deeply involved in the Port of Waterford and was responsible for the introduction of legislation in Parliament for the setting up of the Harbour Authority in 1816.It was also deeply involved with the removal of piracy and smuggling and with the provision of lighthouses around the South-East coast.
In 1815 the Chamber was granted a Royal Charter and continued to operate under this Charter until 1908 when an extended charter was granted during the reign of Edward V11. The purpose of amending this charter was to bring the chamber up to date with trading conditions and to make access more open to manufactures, traders and business professions. The Chamber continues to operate under the 1908 Charter and to-day has 230 member companies.
This stamp was issued on April, 9th.,1987 to commemorate it's centenary.
http://homepage.tinet.ie/~edrice/stampclub/chamber.htm
On the Irish galley is given by Wikipedia:
The Irish galley was a vessel in use in the West of Ireland down to the seventeenth century, and was propelled both by oars and sail. In fundamental respects it resembled the Scottish galley or bìrlinn, their mutual ancestor being the Viking longship. Both the Irish and Scottish versions were colloquially known as "longa fada" (longships). The Irish galley was commonly an eight or twelve-oared vessel and was used for both warfare and trade. It was notable for its speed when rowed.
Conventional galleys were being built in a number of Irish ports in the fourteenth century, and were even commissioned by the Crown. The use of such oared vessels in Northern Europe, in contrast to the Mediterranean, had greatly declined by the sixteenth century; their survival in the west of Ireland, as in the Scottish Isles, was facilitated by very local conditions, among them the ready availability of bays and islands.
Characteristics
No archeological remains have been found which would enable a detailed reconstruction of the Irish galley. There are, however, illustrations on Irish maps of the Elizabethan period (though of contested reliability), and these are supplemented by written accounts. There is also a carving in the old Cistercian monastery on Clare Island (Oileán Chliara), home of the seafaring O'Malleys. The carving, though very simple, shows a vessel remarkably similar to images of its Scottish equivalent, being an oared, single-masted ship with a yard for a single square sail.
Cartographic images of the later sixteenth century, however, show interesting differences from the vessel shown in the carving. This may reflect foreign influences, since Irish galleys traded to Spain and Portugal. An image from a 1657 map of Ireland shows an oared vessel with a round stern and a raked stem. There is a raised deck over the latter, and a cabin with a curved roof considerably aft of the mast. The mast is placed forward and carries a single sail, possible a lug sail. There are stays visible and lifts with a block.
Images on a map of Ulster by Francis Jobson show three Irish galleys, each with eight oars and a vertically striped square sail. Rudders are visible, along with stays, braces and crow's-nests. The forestay descends to a beak, with a round-roofed cabin aft.
There is pictorial evidence that by the end of the sixteenth century similar influences may have affected the design of the Scottish galley. A carving made at Arasaig in 1641 shows a vessel with a lowered stem and stern. An English map of north-east Ireland made no later than 1603 shows "fleetes of the Redshanks [Highlanders] of Cantyre" carrying what resembles a lugsail on a sloping yard arm, with a small cabin at the stern projecting backwards. Two Clanranald seals attached to documents dated 1572 show a birlinn with raised decks at stem and stern, a motif repeated in later heraldic devices. If such changes occurred, they would reflect (as in Ireland) influences from the south-east and ultimately from the Mediterranean.
Construction It is reasonable to assume that galleys in both Western Scotland and the West of Ireland were built in accordance with well-established shipwrights' techniques of north-west Europe, of which the Norse were major exponents. There was extensive Norse settlement both on the west coast of Scotland and around the coasts of Ireland. Norse shipwrights attached both the stem and stern to the keel with scarfed joints, the hull itself being clinker-built with iron nails. Ribs were attached to the strakes with cords or trenails, and thwarts installed. The mast was then inserted in the mast step. The stem and stern posts would have notches to receive the ends of planks, and knees secured the thwarts.
Images of Scottish ships appear to show vessels built in accordance with these techniques. They were clinker-built, open-decked amidships, single-masted and oared, the major difference being that, unlike Norse ships of the classical period, they had a rudder attached to a steep transom.[9] From the evidence available, it is likely that Irish galleys resembled their Scottish equivalents in their construction, rigging, steering and means of propulsion.
Use
References are found in the Annals of the Four Masters to Irish fleets of the period in which the galley was dominant. In 1413, for example, Tuathal Ó Máille, a member of the O'Malley family, was returning to Mayo from Ulster when his fleet of seven ships was overtaken by "anfadh na mara" (a sea tempest) and driven northwards to Scotland. Only Tuathal survived.
The O'Malleys and the O'Flahertys, lords of west Connacht, were the main users of galleys, which they used for plundering or for transporting the troops of other chieftains. In the sixteenth century the Crown made a determined attempt to suppress the Irish fleets with its own ships. In December 1559 the following was recorded in the English State Papers:
"There are three very good galleys with Tibbot ne Longe, sone to Grany O’Malley, his brother and O’Malley that will carry 300 men apiece. These, if employed by Her Majesty, would do much good in the north, and the O’Malleys are much feared everywhere by sea. There are no galleys in Ireland but these."
Grany O’Malley or Grace O'Malley (Irish: Gráinne Ní Mháille) was the most famous of the seafaring chieftains. The Governor of Connacht, Sir Richard Bingham, wrote of her in 1591 that she had twenty ships, though it is uncertain whether this was her usual complement. She, like her father before her, was a notable merchant by sea.
These ships were used for the export of salted and pickled fish, linen, wool, hides and tallow. From Spain and Portugal they would import copper, silk, wine, figs, pomegranates, cumin, cinnamon and saffron.
The English State Papers of 1599 record that Grace O'Malley's son "Tibbot ne Longe" (Irish: Tiobóid na Long - Theobald of the Ships), had three very good ships, each able to carry 300 men. It is likely, however, that such ships were not as large as the English galleon. They were certainly vulnerable to cannon fire (their light construction meant they could carry no great guns themselves), though they could easily hold their own with English craft of a similar size.
https://en.wikipedia.org/wiki/Irish_galley
Ireland 1987 24p sg?, scott?