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{|{{Infobox Ship Begin}}
{| align="right" border="2" cellpadding="4" cellspacing="0" style="margin-left:1em; background: #f9f9f9; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" width="300"
{{Infobox Ship Image
|-
|Ship image=[[Image:No Photo Available.svg|300px|AlternateTextHere]]
!style="color: white; height: 30px; background: #000080;"| ''Aubretia''-class
|Ship caption=
!style="color: white; height: 30px; background: #000080;"| [[Image:Naval Ensign of the United Kingdom.svg|60px|The White Ensign of the [[Royal Navy]].]]
}}
|-
{{Infobox Ship Class Overview
!colspan="2" style="color: white; height: 30px; background: #000080;"|General characteristics
|Name=
|-
|Builders=
| valign="top"| Displacement:
|Operators=
| 1250 tons
|Class before=
|-
|Class after=
| Length:
|Subclasses=
| 255.25 ([[Length between perpendiculars|p/p]]), 267.75 ([[Length overall|o/a]]) feet
|Cost=
|-
|Built range=[[1916]]
| Beam:
|In service range=
| 33.5 feet
|In commission range=[[1916]]–[[1932]]
|-
|Total ships building=
| Draught:
|Total ships planned=
| 11.5 (mean), 12.5 (max.) feet
|Total ships completed=12
|-
|Total ships cancelled=
| valign="top"| Propulsion:
|Total ships active=
⚫
| Machinery: 4-cylinder triple expansion. Boilers: 2 cylindrical. 1 screw
|Total ships laid up=
|-
|Total ships lost=3
| Range:
|Total ships retired=
| Coal: 205 tons
|Total ships preserved=
|-
}}
|-
{{Infobox Ship Characteristics
| Speed:
|Hide header=
⚫
| Designed H.P. 2500 = 17.5 kts., but actually can only make 15-16.5 kts. with this power and require 3000 I.H.P. for 17.5 kts.
|Header caption=
|-
|Ship class=
| Complement:
|Ship type=[[Minesweeper (ship)|Minesweeper]]
| 80 men
|Ship displacement= 1,250 tons
|-
|Ship length= {{convert|255|ft|3|in|m|abbr=on}} [[p/p]]<br /> {{convert|267|ft|9|in|m|abbr=on}} [[o/a]]
|valign="top"|Armament:
|Ship beam= {{convert|33|ft|6|in|m|abbr=on}}
⚫
|Designed to mount 3 x [[12-pounder gun|12 pdr.]], 2 x [[3-pounder gun|3 pdr. A/A]], but had 2 x 4 inch, 1 x 3 pdr. A/A. and [[depth charge]] throwers
|Ship height=
|Ship draught= {{convert|12|ft|6|in|m|abbr=on}}
⚫
|Ship propulsion= 1 × 4-cylinder triple expansion engine<br/>2 × cylindrical boilers<br/>1 screw
⚫
|Ship speed=Designed to make {{convert|17.5|kn|km/h}} at 2,500 ihp, but actually can only make 15-16.5 kts with this power and require 3,000 ihp. for 17.5 kts.
|Ship range= 205 tons of coal
|Ship endurance=
|Ship boats=
|Ship complement=80 men
⚫
|Ship armament=Designed to mount 3 × [[12-pounder gun|12-pdr guns]] and 2 × [[3-pounder gun|3-pdr AA]], but had 2 × 4 inch gun, 1 × 3-pdr AA and [[depth charge]] throwers
|Ship armour=
|Ship notes=
}}
|}
|}
The '''Aubretia class sloops''' were a [[ship class|class]] of twelve [[sloop-of-war|sloop]]s built under the [[Emergency War Programme]] for the [[Royal Navy]] in [[World War I]] as part of the larger [[Flower class sloop|"Flower" class]]. They were also referred to as the "cabbage class", or "[[herbaceous border]]s". The Flowers were the first ships designed as [[Minesweeper (ship)|minesweepers]].
The '''Aubretia class sloops''' were a [[ship class|class]] of twelve [[sloop-of-war|sloop]]s built under the [[Emergency War Programme]] for the [[Royal Navy]] in [[World War I]] as part of the larger [[Flower class sloop|"Flower" class]]. They were also referred to as the "cabbage class", or "[[herbaceous border]]s". The Flowers were the first ships designed as [[Minesweeper (ship)|minesweepers]].
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Like all the Flowers, the ''Aubretia'' class were originally designed as single-screw Fleet Sweeping Vessels, with triple hulls at the bows and an above-water magazine located aft, to give extra protection against loss from [[naval mine|mine damage]] when working. However, the utility of the design was found to be as a [[convoy]] escort, and as such other classes took over the minesweeping role. The ''Aubretias'' were re-classified as Convoy Sloops.
Like all the Flowers, the ''Aubretia'' class were originally designed as single-screw Fleet Sweeping Vessels, with triple hulls at the bows and an above-water magazine located aft, to give extra protection against loss from [[naval mine|mine damage]] when working. However, the utility of the design was found to be as a [[convoy]] escort, and as such other classes took over the minesweeping role. The ''Aubretias'' were re-classified as Convoy Sloops.


Unlike the preceding "Flower"s of the ''Acacia'', ''Azalea'' and ''Arabis'' classes, with their unmistalable warship appearance, the ''Aubretia''s were designed to look like small [[merchantmen]], in the hope of deceiving [[U-boat]] commanders, a tactic known as the [[Q-ship]]. These vessels were built by commercial shipbuilders to [[Lloyd's Register]] standards, to make use of vacant capacity, and the individual builders were asked to use their existing designs for merchantmen, based on the standard Flower-type hull.
Unlike the preceding "Flower"s of the ''Acacia'', ''Azalea'' and ''Arabis'' classes, with their unmistakable warship appearance, the ''Aubretia''s were designed to look like small [[merchantmen]], in the hope of deceiving [[U-boat]] commanders, a tactic known as the [[Q-ship]]. These vessels were built by commercial shipbuilders to [[Lloyd's Register]] standards, to make use of vacant capacity, and the individual builders were asked to use their existing designs for merchantmen, based on the standard Flower-type hull.


== Ships ==
== Ships ==

Six ships were ordered in January [[1916]]:
Six ships were ordered in January [[1916]]:
*[[HMS Aubrietia (1916)|''Aubretia'']] — built by [[Blyth Shipbuilding Company]], [[Blyth, Northumberland|Blyth]], launched [[17 June]] [[1916]]. Sold [[25 October]] [[1922]].
* {{HMS|Aubrietia|1916|6}} — built by [[Blyth Shipbuilding Company]], [[Blyth, Northumberland|Blyth]], launched [[17 June]] [[1916]]. Sold [[25 October]] [[1922]].
*[[HMS Heather (1916)|''Heather'']] — built by [[Greenock & Grangemouth Dockyard Company]], [[Greenock]], launched [[16 June]] [[1916]]. Sold for breaking up [[16 February]] [[1932]].
* {{HMS|Heather|1916|6}} — built by [[Greenock & Grangemouth Dockyard Company]], [[Greenock]], launched [[16 June]] [[1916]]. Sold for breaking up [[16 February]] [[1932]].
*[[HMS Salvia (1916)|''Salvia'']] — built by [[Irvine's Shipbuilding & Dry Dock Company]], [[West Harlepool]], launched [[16 June]] [[1916]]. Sunk by German submarine ''[[U.94]]'' off south-west Ireland [[20 June]] [[1917]].
* {{HMS|Salvia|1916|6}} — built by [[Irvine's Shipbuilding & Dry Dock Company]], [[West Harlepool]], launched [[16 June]] [[1916]]. Sunk by German submarine [[Unterseeboot 94|''U.94'']] off south-west Ireland [[20 June]] [[1917]].
*[[HMS Tamarisk (1916)|''Tamarisk'']] — built by [[Lobnitz|Lobnitz & Company]], [[Renfrew]], launched [[2 June]] [[1916]]. Sold for breaking up [[17 October]] [[1922]].
* {{HMS|Tamarisk|1916|6}} — built by [[Lobnitz|Lobnitz & Company]], [[Renfrew]], launched [[2 June]] [[1916]]. Sold for breaking up [[17 October]] [[1922]].
*[[HMS Tulip (1916)|''Tulip'']] — built by [[Richardson, Duck & Company]], Stockton-on-Tees, launched [[15 July]] [[1916]]. Sunk by German submarine ''[[U.62]]'' in the Atlantic [[30 April]] [[1917]].
* {{HMS|Tulip|1916|6}} — built by [[Richardson, Duck & Company]], Stockton-on-Tees, launched [[15 July]] [[1916]]. Sunk by German submarine [[Unterseeboot 62|''U.62'']] in the Atlantic [[30 April]] [[1917]].
*[[HMS Viola (1916)|''Viola'']] — built by [[Ropner & Sons]], [[Stockton-on-Tees]], launched [[14 July]] [[1916]]. Sold for breaking up [[17 December]] [[1922]].
* {{HMS|Viola|1916|6}} — built by [[Ropner & Sons]], [[Stockton-on-Tees]], launched [[14 July]] [[1916]]. Sold for breaking up [[17 December]] [[1922]].
A further six ships were ordered in December 1916:
A further six ships were ordered in December 1916:
*[[HMS Andromeda (1917)|''Andromeda'']] — built by Swan Hunter and Wigham Richardson, Wallsend on Tyne, launched June [[1917]]. Transferred to French Navy, later renamed ''Ville d'Ys''.
* {{HMS|Andromeda|1917|6}} — built by Swan Hunter and Wigham Richardson, Wallsend on Tyne, launched June [[1917]]. Transferred to French Navy, later renamed ''Ville d'Ys''.
*[[HMS Gaillardia (1917|''Gaillardia'']] — built by Blyth Shipbuilding, launched [[19 May]] [[1917]]. Mined in the North Sea [[22 March]] [[1918]].
* {{HMS|Gaillardia|1917|6}} — built by Blyth Shipbuilding, launched [[19 May]] [[1917]]. Mined in the North Sea [[22 March]] [[1918]].
*[[HMS Hibiscus (1917)|''Hibiscus'']] — built by Greenck and Grangemouth, launched [[17 November]] [[1917]]. Sold for breaking up [[18 January]] [[1923]].
* {{HMS|Hibiscus|1917|6}} — built by Greenck and Grangemouth, launched [[17 November]] [[1917]]. Sold for breaking up [[18 January]] [[1923]].
*[[HMS Lychnis (1917)|''Lychnis'']] — built by William Hamilton and Company, Port Glasgow, launched [[21 August]] [[1917]]. Transferred to [[Royal Indian Marine]] in September 1921, renamed ''Cornwallis''; sold [[1946]].
* {{HMS|Lychnis|1917|6}} &mdash; built by William Hamilton and Company, Port Glasgow, launched [[21 August]] [[1917]]. Transferred to [[Royal Indian Marine]] in September 1921, renamed ''Cornwallis''; sold [[1946]].
*[[HMS Montbretia (1917)|''Montbretia'']] — built by Irvine's, launched [[3 September]] [[1917]]. Sold [[25 January]] [[1921]], becoming mercantile ''Chihuahua'' ([[Clan Line]]).
* {{HMS|Montbretia|1917|6}} — built by Irvine's, launched [[3 September]] [[1917]]. Sold [[25 January]] [[1921]], becoming mercantile ''Chihuahua'' ([[Clan Line]]).
*[[HMS Polyanthus (1917)|''Polyanthus'']] — built by Lobnitz, launched [[24 September]] [[1917]]. Sold [[25 January]] [[1921]], becoming mercantile ''Colima'' (Clan Line).
* {{HMS|Polyanthus|1917|6}} — built by Lobnitz, launched [[24 September]] [[1917]]. Sold [[25 January]] [[1921]], becoming mercantile ''Colima'' (Clan Line).


==References ==
==References ==

Revision as of 00:10, 27 May 2008

Class overview
Built1916
In commission1916–1932
Completed12
Lost3
General characteristics
TypMinesweeper
Displacement1,250 tons
Lengthlist error: <br /> list (help)
255 ft 3 in (77.80 m) p/p
267 ft 9 in (81.61 m) o/a
Beam33 ft 6 in (10.21 m)
Draught12 ft 6 in (3.81 m)
Propulsionlist error: <br /> list (help)
1 × 4-cylinder triple expansion engine
2 × cylindrical boilers
1 screw
SpeedDesigned to make 17.5 knots (32.4 km/h) at 2,500 ihp, but actually can only make 15-16.5 kts with this power and require 3,000 ihp. for 17.5 kts.
Range205 tons of coal
Complement80 men
ArmamentDesigned to mount 3 × 12-pdr guns and 2 × 3-pdr AA, but had 2 × 4 inch gun, 1 × 3-pdr AA and depth charge throwers

The Aubretia class sloops were a class of twelve sloops built under the Emergency War Programme for the Royal Navy in World War I as part of the larger "Flower" class. They were also referred to as the "cabbage class", or "herbaceous borders". The Flowers were the first ships designed as minesweepers.

Like all the Flowers, the Aubretia class were originally designed as single-screw Fleet Sweeping Vessels, with triple hulls at the bows and an above-water magazine located aft, to give extra protection against loss from mine damage when working. However, the utility of the design was found to be as a convoy escort, and as such other classes took over the minesweeping role. The Aubretias were re-classified as Convoy Sloops.

Unlike the preceding "Flower"s of the Acacia, Azalea and Arabis classes, with their unmistakable warship appearance, the Aubretias were designed to look like small merchantmen, in the hope of deceiving U-boat commanders, a tactic known as the Q-ship. These vessels were built by commercial shipbuilders to Lloyd's Register standards, to make use of vacant capacity, and the individual builders were asked to use their existing designs for merchantmen, based on the standard Flower-type hull.

Ships

Six ships were ordered in January 1916:

A further six ships were ordered in December 1916:

References

  • The Grand Fleet, Warship Design and Development 1906-1922, D. K. Brown, Chatham Publishing, 1999, ISBN 1-86176-099-X
  • Jane's Fighting Ships of World War I, Janes Publishing, 1919
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