What are the LOA (metres) of boat with sail number M10?
CREATE TABLE "line_honours_results_top_10" (
  "position" real,
  "race_number" text,
  "sail_number" text,
  "yacht" text,
  "state_country" text,
  "yacht_type" text,
  "loa_metres" text,
  "skipper" text,
  "elapsed_time_d_hh_mm_ss" text
);
SELECT "loa_metres" FROM "line_honours_results_top_10" WHERE "sail_number"='M10';