Question 1198037
just Law Of Sines?

The upper ship, U
the lower ship, B


{{{system(sin(45)/800=sin(U)/d=sin(B)/1000,45+U+B=180)}}}


Look at that first combination equation which uses Law Of Sines.
Transitive Property means that {{{sin(45)/800=sin(B)/1000}}}, so this should help to find a value or values for angle at point B.


That seems to give without much complication, {{{B=62*degrees}}} and {{{U=73*degrees}}}.  Returning to Law Of Sines again to find d should be very clear to do.
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I'm finding {{{d=1082}}}.



** solution is incomplete.