His time as a civilian was short-lived,
however.The Japanese strike on Pearl Harbor saw
him back in the Navy by December 12, 1941, assigned to duty at the US Naval
Net Depot at Tiburon, California, where Carpenter’s Mates with small boat
repair experience were urgently needed.
Later in the war, he served aboard a Net Tender in the
Marshall Islands in 1944. There, he was appointed a Warrant Carpenter, with
orders to join a Lion 9 Mobile Repair Unit being formed as part of an
Amphibious Assault Force for the invasion of the Japanese Home Islands, no
doubt because of his boat repair work at Tiburon. When the war ended, he
returned to civilian life.
After World War II, with the great expansion of the
chemical industry, ropes made of synthetic fibers began to displace
traditional ropes made of natural fibers like hemp and cotton. The
Fid-O© was invented in 1972, to
facilitate the splicing of synthetic rope when manila cordage was no longer
available. Many of Mr. McGrew's 8 patents related to splicing can be traced
back to splicing skills and methods he learned as a Sailmaker’s Striker on
the USS New Orleans, from a Navy Sailmaker’s Mate First Class who passed on
many of his skills man-to-man.