Ham-class minesweeper: Difference between revisions

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{{short description|1954 class of minesweeper of the Royal Navy}}

{|{{Infobox Ship Begin}}

{{Use dmy dates|date=April 2022}}

{{Infobox Ship Image

{{more footnotes needed|date=February 2013}}

|Ship image=

{|{{Infobox ship begin|sclass=2}}

|Ship caption=

{{Infobox ship image

|Ship image=HMS Portisham (26782178757).jpg

|Ship caption=HMS ''Portisham''

}}

{{Infobox Shipship Classclass Overviewoverview

|Name=

|Builders=

|Operators=*{{navy|UKUnited Kingdom}}<br>
*{{navy|Australia}}<br>
*{{navy|France}}<br>
*{{navy|Ghana}}<br>
*{{navy|Libya}}<br>
*{{navy|India}}<br>
*{{navy|Malaysia}}<br>
*{{navy|Saudi Arabia}}

*{{navy|Yugoslavia}}

|Class before=

|Class after=

|Subclasses=

|Cost=

|Built range=1954&ndash;19591954–1959

|In service range=

|In commission range=

Line 25 ⟶ 36:

|Total ships preserved=

}}

{{Infobox Shipship Characteristicscharacteristics

|Hide header=

|Header caption=

|Ship classtype=[[Minesweeper]]

|Ship displacement=*{{convert|120|LT|t|0}} standard

|Ship type=[[Minesweeper (ship)|Minesweeper]]

|Ship displacement= {{convert|120|LT|t|0}} standard<br /> *{{convert|164|LT|t|0}} full load

|Ship length= *{{convert|100|ft|m|abbr=on}} [[Length between perpendiculars|p/p]]<br />
*{{convert|106|ft|6|in|m|abbr=on}} [[length overall|o/a]], except third sub-group {{convert|107|ft|6|in|m|abbr=on}}

|Ship beam= *''26- group:'' {{convert|21|ft|4|in|m|abbr=on}}<br />
*''27- group:'' {{convert|22|ft|m|abbr=on}}

|Ship height=

|Ship draught= *''26- group:'' {{convert|5|ft|6|in|m|abbr=on}}<br />
*''27- group:'' {{convert|5|ft|9|in|m|abbr=on}}

|Ship depth=

|Ship propulsion=*2 shaft [[Paxman (engines)|Paxman]] 12YHAXM diesels<br />1,100 bhp (820 kW)

|Ship speed= *{{convert|14|kn1100|mph km/hbhp|lkabbr=inon}}

|Ship speed= {{convert|14|kn}}

|Ship range= 15 tons diesel fuel, ?

|Ship endurance=

Line 43 ⟶ 58:

|Ship sensors=

|Ship EW=

|Ship armament= 1 × [[Bofors 40 mm L/60 gun]] ''or'' [[Oerlikon 20 mm cannon]]

|Ship armour=

|Ship notes=

}}

|}

The '''Ham class''' was a [[ship class|class]] of inshore [[minesweeper (ship)|minesweeper]]s (IMS), known as the Type 1, of the [[United Kingdom|British]] [[Royal Navy]]. The class was designed to operate in the shallow water of [[river]]s and [[Estuary|estuaries]]. ItAll tookof itsthe nameships fromin the factclass thatare allnamed the ship names werefor British place names endingthat inend with [[List of generic forms in British place names|-"ham"]]. The parent firm whothat werewas responsible for supervising construction was [[J. Samuel White|Samuel White]] of [[Cowes]], Isle of Wight.

==Description==

The class consisted of 93 ships, launched between 1954 and 1959. {{HMS|Inglesham}} (M2601) was the first. They were built in three slightly different sub-groups, the first sub-group being distinguished by [[pennant number]]s beginning with 26- and the second and third sub-groups being distinguished by [[pennant number]]s beginning with 27-. The 26- group were of composite construction (wood and [[non-ferrous metal]]s and the 27- group were all-wooden, of which the third sub-group differed by having a prominent rubbing strake around the hull and slightly enlarged dimensions.

The class consisted of 93 ships, launched between 1954 and 1959. {{HMS|Inglesham|M2601|6}} was the first. They were built in three slightly different sub-groups, the first sub-group, the 26-group, is distinguished by [[pennant number]]s 26xx, and the second and third sub-groups, the 27-group, are distinguished by pennant numbers 27xx. The 26-group was of wood and [[non-ferrous metal]] composite construction and the 27-group was of all-wood construction. The third sub-group is distinguished by a prominent rubbing strake around the hull and slightly larger dimensions.

Unlike traditional minesweepers, they were not equipped for sweeping moored or magnetic mines. Their work was to locate individual mines and neutralise them. This was a then-new role, and the class was configured for working in the shallow water of [[river]]s, [[Estuary|estuaries]] and [[shipping channel]]s.

The vessels displaced 164&nbsp;[[long ton|tons]] fully laden and were armed with one [[Bofors 40 mm gun|40 mm Bofors]] or [[Oerlikon 20 mm cannon|20 mm Oerlikon]] gun. They were 32.5 metres long overall by 6.4 metres beam. The construction was of wood to minimise magnetic signature. The crew complement was 15, rising to 22 in wartime.

The vessels displaced {{convert|164|LT}} fully laden and were armed with one [[Bofors 40 mm Automatic Gun L/60|40 mm Bofors]] or [[Oerlikon 20 mm cannon|20 mm Oerlikon]] gun. They were {{convert|32.5|m}} long overall with a {{convert|6.4|m|adj=on}} beam. The construction was of wood to minimise the magnetic signature. The crew complement was 15, rising to 22 in wartime.

The engines of this class were [[Paxman (engines)|Paxman]] [[diesel engine|diesels]], some of which were built under licence by [[Ruston (engine builder)|Ruston and Hornsby]] of [[Lincoln, Lincolnshire|Lincoln]]. Each vessel had: two 12YHAXM (intercooled) for main propulsion, rated 550 [[Horsepower#Brake horsepower|bhp]] at 1,000 rpm, plus one 12YHAZ for pulse generation. Maximum speed was {{convert|14|kn|km/h}} dropping to {{convert|9|kn|km/h}} when mine sweeping.

The engines of this class were [[Paxman (engines)|Paxman]] [[diesel engine|diesels]], some of which were built under licence by [[Ruston (engine builder)|Ruston and Hornsby]] of [[Lincoln, Lincolnshire|Lincoln]]. Each vessel had: two 12YHAXM (intercooled) for main propulsion, rated at {{convert|550|bhp|abbr=on|lk=in}} at 1,000 rpm, plus one 12YHAZ for pulse generation. Maximum speed was {{convert|14|kn}} dropping to {{convert|9|kn}} when mine hunting.

The class shared the same basic hull as their [[minehunter|minehunting]] counterpart, the [[Ley class minehunter|Ley-class]] and the [[Echo class survey ship (1957)|''Echo''-class]] inshore survey craft.

The class shared the same basic hull as the {{sclass2|Ley|minehunter}} and the {{sclass|Echo|survey ship (1957)|0}} inshore survey craft.

{{Clear}}

==Ships==

{{div col|colwidth=30em}}

{{Col-begin}}

{{Col-1-of-3}}

* {{HMS|Abbotsham}} (IMS87)

* {{HMS|Altham}} (IMS02)

Line 73 ⟶ 91:

* {{HMS|Boreham}} (IMS10)

* {{HMS|Bottisham}} (IMS11)

* {{HMS|Brantingham}} (IMS12) (later HMMS ''Temasek'')<ref>{{cite book|title=Malaysia|author1=British Association of Malaysia|author2=British Association of Malaysia and Singapore|year=1958|page=51|url=https://books.google.com/books?id=WHkZAAAAMAAJ&q=%22hms+brantingham%22|access-date=9 January 2018}}</ref>

* {{HMS|Brantingham}} (IMS12)

* {{HMS|Brigham}} (IMS13)

* {{HMS|Bucklesham}} (IMS14)

* {{HMS|CardinghamCardinham}} (IMS15)

* {{HMS|Chelsham}} (IMS16)

* {{HMS|Chillingham}} (IMS17)

Line 92 ⟶ 110:

* {{HMS|Felmersham}} (IMS29)

* {{HMS|Flintham}} (IMS30)

{{col-2-of-3}}

* {{HMS|Fordham}} (IMS54)

* {{HMS|Frettenham}} (IMS20)

Line 108 ⟶ 125:

* {{HMS|Kingham}} (IMS41)

* {{HMS|Lasham}} (IMS38)

* {{HMS|Ledsham}} (IMS43) (burnt to hull, London 2017)

* {{HMS|Littleham}} (IMS44)

* {{HMS|Ludham}} (IMS45)

Line 124 ⟶ 141:

* {{HMS|Pineham}} (IMS56)

* {{HMS|Polsham}} (IMS92)

{{col-3-of-3}}

* {{HMS|Popham}} (IMS82)

* {{HMS|Portisham}} (IMS81)

Line 139 ⟶ 155:

* {{HMS|Shipham}} (IMS63)

* {{HMS|Shrivenham}} (IMS65)

* {{HMS|Sidlesham}} (IMS66) (beached and abandoned, Battersea London 2017)

* {{HMS|Sparham}} (IMS68)

* {{HMS|Stedham}} (IMS67)

Line 156 ⟶ 172:

* {{HMS|Wrentham}} (IMS79)

* {{HMS|Yaxham}} (IMS80) (later HMS ''Woodlark'')

{{Col-div col end}}

In 1964 Ten of the vessels were allocated to the [[Royal Naval Auxiliary Service]]

{| class="wikitable"

|Name

|Call sign

|Pennant No

|Completed

|Builders

|Joined RNXS

|Disposal

|-

|Birdham

|

|M.2785

|5-Mar-57

|J.Taylor

|1964

|May 1980 - Arrived Great Wakering, Essex for Breaking

|-

|Odiham

|

|M.2783

|27-Jul-56

|Vospers

|1964

|1978 - on disposal list., May 1980 sold to Sutton & Smith, Great Wakering, Essex

|-

|Pagham

|

|M.2716

|22-Mar-56

|Jones, Buckie

|1964

|to 1974.1982, RNR Tender

|-

|'''Portisham'''

|'''GTDG'''

|'''M.2781'''

|'''26-Mar-56'''

|'''Dorset Yacht'''

|'''1964'''

|'''to 1983 at HMS ''Vernon'', Portsmouth'''

|-

|Puttenham

|

|M.2784

|9-May-58

|Thorneycroft

|1964

|to 1978 at Plymouth

|-

|Saxlingham

|

|M.2727

|29-Jan-57

|Berthon Boat

|1964

|to 1965. Approved to scrap 1966. 2 May 1968 sold to Ross & Cromarty CC for Lewis Sea School

|-

|'''Shipham'''

|'''MTMW'''

|'''M.2726'''

|'''3-Feb-56'''

|'''Brooke Marine'''

|'''1964'''

|'''to 1983 at Gillingham'''

|-

|Shrivenham

|

|M.2728

|11-Aug-56

|Bolson

|1964

|to 1965. For disposal in 1966. Sold to PLA, 21 Feb 1969. Approved to scrap 1966. 2 May 1968 sold to Ross & Cromarty CC for Lewis Sea School

|-.

|'''Thakeham'''

|'''GTJC'''

|'''M.2733'''

|'''15-Nov-57'''

|'''Fairlee Yacht'''

|'''1964'''

|'''to 1978. 1979 for disposal'''

|-

|Tongham

|

|M.2735

|18-Jun-57

|J.Miller

|1964

|to 1978, also PAS. 1979 for disposal

|}

==References==

{{reflist}}

* ''Warships of the Royal Navy'', Captain John. E. Moore RN, Jane's Publishing, 1979

<br>

{{Ham class minesweeper|others}}

{{Ham class minesweeper|others}}

[[Category:Mine warfare classes]]

{{Yugoslav Ships |state=collapsed}}

[[Category:Ham class minesweepers| ]]

{{Ship classes of the Indian Navy}}

[[Category:Ham-class minesweepers| ]]

[[cs:Třída Ham]]

[[Category:Mine warfare vessel classes]]

[[Category:Ship classes of the Royal Navy]]

[[Category:Mine warfare vessels of the Yugoslav Navy]]