A Science Crossword - Quick

[Matakari]

Good morning, help with another Science puzzle would be appreciated.
Thanks in advance!

7d Wrecking (9): R?I?A?O?B
15d Describing a vessel on land, often for repair (3-6): S?L?O?K?D
( DRY-DOCKED seems obvious. My crossers may be wrong. )

Two Crossers:
13a Supplementary computer memory devices (8, 6) : E?T?R?A?????E?
( EXTERNAL STORES )
16a Oxygenated metalloprotein of some invertebrates (14): ?X?H?E?O?????N
( OXYHAEMOGLOBIN )

[bhg481]

13a could be external drives - does that replace the S in 15d with D?

[Matakari]

Thanks, bhg481! Yes the S goes, but the L in 16a would also have to be replaced by a Y to give me DRY-DOCKED. I'll have to review 16a now.

[cashier]

16 oxyaemocyanin?

[bhg481]

Where do the crossers in 7d come from?

[bobbinwales]

on 7d i'd start from the B being wrong. What gave your B. i thought i7d would end ING

[cashier]

Spelled that wrong. Oxyhaemocyanin. It's what turns blood in an octopus blue. Which fits in with invertebrates. (Octopus).

[bhg481]

bobb - I'm with you, unless it ends in BOMB

[bobbinwales]

as matakari has said crossers i assume 13 and 16a cross 7d so B may become N....but not sure where other crossers come from.
Looks like a few maybe wrong

[bobbinwales]

oxyhaemoglbin was probably wrong as its not just in invertibrates... so I'd go for yours bhg

[bobbinwales]

replace stores for drives may give an I for the O.... so 7d probs ends in ING

[bhg481]

bobb - your suggestions allow a dodgy RADIATION for 7d, on the grounds that radiation can be used to wreck things. OK, it makes the I wrong.

[bhg481]

sorry - RADIATING.

[Matakari]

Yes! Thanks, all, it's fallen into place now with the spelling of Oxyhaemocyanin. And my 7d is naturally RUINATION!

[writesbad]

7d Ruination

[bobbinwales]

Yes sorry bhg without a grid in front of me I was forgetting the N was probably last letter (so ION) not next to last (ING)