State immunity — Jurisdictional immunity — State entity — Former State enterprise — Enterprise transformed into joint stock company with majority of shares held by private individuals — State retaining minority shares and control over management — Arrest of ship owned by company — Whether company entitled to State immunity in respect of ship

State succession — Treaties — Russian Federation — United Kingdom State Immunity (Merchant Shipping) (Union of Soviet Socialist Republics) Order 1978 granting immunity from arrest in respect of ships owned by USSR and used for commercial purposes — Distinction between succession to privileges under treaties and succession to privileges under Order — Whether ship owned by Russian Federation can be regarded as ship owned by USSR for purposes of Order — The law of Scotland