Primrose 1917
Foxglove 1939
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| Acacia | Swan Hunter, Wallsend | 1/1915 | 15/4/1915 | 5/1915 | BU 9/1922 | |
| Anemone | Swan Hunter, Wallsend | 3/1915 | 30/6/1915 | 7/1915 | BU 9/1922 | |
| Aster | Earle, Hull | 1915 | 1/5/1915 | 6/1915 | sunk 4/7/1917 | |
| Bluebell | Scotts, Greenock | 1915 | 24/7/1915 | 8/1915 | BU 5/1930 | |
| Daffodil | Scotts, Greenock | 1915 | 17/8/1915 | 9/1915 | BU 2/1935 | |
| Dahlia | Barclay Curle, Glasgow | 1915 | 21/4/1915 | 5/1915 | BU 7/1932 | |
| Daphne | Barclay Curle, Glasgow | 1915 | 19/5/1915 | 6/1915 | BU 1/1923 | |
| Foxglove | Barclay Curle, Glasgow | 1915 | 30/3/1915 | 5/1915 | BU 9/1946 | |
| Hollyhock | Barclay Curle, Glasgow | 1915 | 1/5/1915 | 6/1915 | BU 10/1930 | |
| Honeysuckle | Lobnitz, Renfrew | 1915 | 29/4/1915 | 5/1915 | BU 9/1922 | |
| Iris | Lobnitz, Renfrew | 1915 | 1/6/1915 | 7/1915 | BU 1/1920 | |
| Jonquil | Connell, Scotstoun | 1915 | 12/5/1915 | 6/1915 | to Portugal 5/1920 (Carvalho Araujo) | |
| Laburnum | Connell, Scotstoun | 2/1915 | 10/6/1915 | 8/1915 | sunk 2/1942 | |
| Larkspur | Napier & Miller, Govan | 1915 | 11/5/1915 | 6/1915 | BU 3/1922 | |
| Lavender | McMillan, Dumbarton | 1915 | 12/6/1915 | 7/1915 | sunk 4/5/1917 | |
| Lilac | Greenock & Grangemouth | 1915 | 29/4/1915 | 5/1915 | BU 12/1922 | |
| Lily | Barclay Curle, Glasgow | 1915 | 6/6/1915 | 7/1915 | BU 6/1930 | |
| Magnolia | Swan Hunter, Wallsend | 1915 | 26/6/1915 | 7/1915 | BU 7/1932 | |
| Mallow (7/1919 - RAN) | Barclay Curle, Glasgow | 1915 | 13/7/1915 | 8/1915 | sunk as target 1/8/1935 | |
| Marigold | Bow McLachlan, Paisley | 1915 | 27/5/1915 | 6/1915 | BU 1/1920 | |
| Mimosa | Bow McLachlan, Paisley | 1915 | 16/7/1915 | 8/1915 | BU 11/1922 | |
| Primrose | Simons, Renfrew | 1915 | 29/6/1915 | 7/1915 | BU 4/1923 | |
| Sunflower | Henderson, Glasgow | 1915 | 28/5/1915 | 6/1915 | BU 1/1921 | |
| Veronica | Dunlop Bremner, Glasgow | 1/1915 | 27/5/1915 | 8/1915 | BU 2/1935 |
|
Displacement normal, t |
1200 |
|
Displacement full, t |
1275 |
|
Length, m |
76.2 pp 80.0 oa |
|
Breadth, m |
10.1 |
|
Draught, m |
3.40 |
|
No of shafts |
1 |
|
Machinery |
VTE, 2 cylindrical boilers |
|
Power, h. p. |
1800 |
|
Max speed, kn |
16.5 |
|
Fuel, t |
coal 130 |
|
Endurance, nm(kts) |
2000(15) |
|
Armament |
2 x 1 - 76/40 QF Mk I, 2 x 1 - 47/50 Vickers AA, sweeps |
|
Complement |
90 |
Ship project history: The ships which have revived a class of sloops in Royal Navy. They were designed in the end of 1914 for usage as a minesweeping vessel, patrol ship, tug, personal and cargo transport. Because of congestion of Admiralty and private yards having experience of military shipbuilding, they were built on unspecialized yards. For this purpose a hull structure and a propulsive plant have as much as possible simplified. Difficult in production and maintenance turbines and water-tube boilers have refused in favour of more habitual to reservists and recruits triple expansion stem engine and fire-tube coal-burning boilers. At designing special measures on magazine protection have been taken. It have moved astern and have protected by light box-shaped armour. Early 1915 36 ships of 1st group are ordered.
Simplicity of a construction has allowed to put a number of the ships into the
service in five months after laying down. They were successful in many respects
and had only one serious lack: single-shaft machinery
and big enough slenderness of the hull has led to that
sloops differed by the big tactical diameter.
The new ships have received names of colours and plants, therefore the type
became known as "Flower". In a role of minesweepers they have appeared not so
successful (too a deep draught) and have become famous in other role: since 1917
they were attracted in escort service.
Modernizations: 1917, all survived: + 2 DCT, 1 DCR
1919 - 1920, all survived: - 2 x 1 - 76/40, 2 x 1 - 47/50; + 2 x 1 - 102/40 QF Mk IV, 2 x 1 - 40/39 pompom
early 1940s, Foxglove: - 1 x 1 - 102/40, sweeps; + 1 x 1 - 76/40 QF Mk I HA, 2 x 1 - 40/39 pompom, 2 x 1 - 20/70 Oerlikon, 2 DCT, 1 DCR
Naval service: Aster was mined, Lavender was torpedoed by Germans. Laburnum was destroyed in Singapore by Japanese. Foxglowe was badly damaged by aircraft 9/7/1940; she was converted to AA ship and to depot ship in 1943.
© Ivan Gogin, 2008-10