Reuters: Royal Dutch Shell PLC said on Monday an icebreaker crucial to planned Arctic oil drilling will be sent to Portland, Oregon to repair a gash in its hull, but the issue is not expected to delay the beginning of drilling off Alaska later in July. Shell crew on the Fennica icebreaker last week found the 39-inch (1 meter) gash in the hull, likely caused by an uncharted shoal. Voyage time between Portland and southern Alaska should not delay the company's plans to begin drilling off northern Alaska in...