Local Cryptic

[bruisersnan]

Can you help please....

Navigational system used to fly round north. 5 Letters
S - - - -

Specially made unit of leading furniture. 3,3. Letters
O - - / - - -

Lady in confinement received 1%. 5,2,3,5. Letters
- - - - - / - n /the / - - u - -

Poison obtained from blue fish. 7 Letters
- - - n i - -


Thank you.

[montyblanc]

1. Sonar

[Ouzel]

1, Sonar
3. Penny in the pound

[Sam1960]

one off ?

[bibblebub]

4) cyan ide

[cg51]

2 one off?

[Cruciformist]

2. one off

[grasscarp]

one off

[montyblanc]

4. Cyanide

[bruisersnan]

Thank you all so much, that's great.