M-class minelayer

{{Infobox ship image

| Ship image = HMS Steady (9920860185).jpg

| Ship caption = HMS Steady, former Miner VII

}}

{{Infobox ship class overview

| Name = M class

| Builders =

| Operators = {{navy|United Kingdom}}

| Class before = {{sclass|Linnet|minelayer|4}}

| Class after = {{sclass|Abdiel|minelayer|4}}

| Subclasses =

| Cost =

| Built range = 1939–1943

| In service range =

| In commission range = 1939–1980

| Total ships building =

| Total ships planned = 9

| Total ships completed = 8

| Total ships cancelled =

| Total ships active =

| Total ships laid up =

| Total ships lost =

| Total ships retired = 8

| Total ships preserved =

}}

{{Infobox ship characteristics

| Hide header =

| Header caption =

| Ship class =

| Ship type = Controlled minelayer

| Ship tonnage =

| Ship displacement = 364 tons standard

| Ship length = *{{convert|110|ft|3|in|m|abbr=on}} (p/p)

| Ship beam = {{convert|26|ft|6|in|m|abbr=on}}

| Ship height =

| Ship draught = {{convert|8|ft|0|in|m|abbr=on}}

| Ship depth =

| Ship hold depth =

| Ship decks =

| Ship deck clearance =

| Ship power =

| Ship propulsion = *Triple expansion engine

• 2 shaft
• {{convert|720|hp|abbr=on}}

| Ship sail plan =

| Ship speed = {{convert|10|kn}}

| Ship range =

| Ship endurance =

| Ship complement = 32

| Ship time to activate =

| Ship sensors =

| Ship EW =

| Ship armament =

| Ship armour =

| Ship notes =

}}